O2 Business Arvostelua 

Historically, I've been with O2 for 10+ years. It was natural to stick with O2 when I became self employed some moons ago.
Gradually, the customer service got worse. It used to be great, you'd get through to a CSA as a business user quicker and more efficiently than a consumer customer and issues would be resolved the same day I call.
After 10+ years, I've phased out using O2 business and either moved on or moved over to using O2 consumer contracts because its so much more pleasant dealing with O2 consumer CSA's, and it's such a breath of fresh air being able to go to an O2 store and speak to someone who is willing to help.
The last 2 contracts I had with O2 business has been an absolute sh*theap time. The first one; some absolute belter made a mistake with the contract renewal to the point we had no service on the phone for months. When we came to try and resolve it, the phone line was disconnected. Well over 6 months of back and forths with not even a 'sorry' when I decided to give up and let them close the contract down.
Second one? O2 invoiced me some extortionate amount (Over £1k iirc) for INCOMING phone calls that we never even answered (records show) and their justification was because we NEVER OPTED OUT of INTERNATIONAL calls. Now, over a year later because of the amount of credit we accrued because of that mess I'm trying to close the account. I went to my local O2 store, opened a new O2 Consumer contract with the hopes of keeping the original number and with the lovely staff on the phone to O2 business on my behalf to be told they cannot generate a PUK code on a saturday and to 'try again monday'. Lo and behold, its monday. I call at 8am, on the phone to a CSA to be told that I MUST HAVE the phone on me in order to pass security and generate a PUK. I own the contract, I passed security to talk to you. Why on earth do I need the physical phone NOW when all I'm trying to do is RETAIN the number for business purposes.

Having left 02 after being with them nearly 20 years, I get a bill with a credit. The credit isn’t repaid on the normal date, I call up having googled the number as on the finial bill they leave off the number!
Anyway on the phone I am informed I have to call up to get my refund, then a manager will call me back - not even sure this will happen.
Appalling service which reinforces why I left, do not recommend.

Awful customer service. The business website makes it hard to find a phone number to ring.
I have been a customer for TWENTY TWO years and I wish I could get out of the terrible loop of horrible poor customer service from 02.

Awful expensive an outdated, its like having BT broadband... everything is wrong there.

Taken 2 hours so far to try and cancel my account. After 11 years I would expect better. Strangely failed security despite having hard copy of bill in front of me.
Now want to me to go to a store-
Not acceptable

My father died and I tried to follow the instructions on O2's "bereavement" webpage to transfer his number to a PayAsYouGo number in my own name. This is important for some administrative issues (e.g. security codes which get texted to his old number).
This process has taken, so far (still not reached a successful resolution), 4 phone calls with O2 totalling probably 2+hours with a succession of staff many of who don't seem to know their own process. I was promised a callback today and it didn't come. I'm sick of their stupid hold music and talking to offshore staff in the Philippines with broken English (you don't "have a load" - you "buy some credit").
This kind of painful process is the last thing someone needs when dealing with a bereavement.

UPDATE following O2 response below: I provided the information. I’ve emailed their team 3 times. I’ve called their offshore call centre 7 times. They have not sorted this. I will never use 02 again.

I just spent the last 50 minutes on the phone with O2 business. Just a renew my contract keeping everything the same and just saying yes proceed.

First, I couldn’t understand the lady on the phone, with an extremely heavy accent.

Secondly, after waiting 20 minutes for her to generate the documents, she then said I had to check the email and I told her I was not able to check my emails at that time. To be told well then she will wait for me to do so because they need to be checked without any prior warning the very beginning of the call that this invisible button is necessary.

To then tell her I’ve been on the call already for the last 40 mins, I didn’t need to hear any o2 guff, or want to hear anything about the priorities or marketing no nonsense does she have to tell me.

So whenever she started reading off the sheet, I kept telling her to stop and just to get to the end I don’t need to hear it.

It was painful!!!!!

Honestly, O2 get your act together.

We don’t want to hear all the nonsense, we just want the price and say to proceed.

Paid a balance by bank card, few days later they take 2.5k out of my bank for a disconnevtion fee. Since then we had the disconnection fee removed and cancelled our direct debit to pay manually by card each month as we could not trust them. Turns out the only way to pay is by actually speaking to them which involves a very difficult verification process that as the account holder id not expect to fail but often did.. i do not know how much theblast invoice and what date it is no.. not a computer 24/7. Stupidity, inconvenience and then i find they keep reporting this to my companies credit profile. Late payments recorded because they make it inconvenient enough to warrant only getting called when i notice a disruption to service.

Save yourself the hassle of being operationally crippled for 3 months whilst they hold onto your funds and keep your account 2k+ in credit and then shoe horned with bad credit report notes because they dont know how to add a "pay invoice" link to their website like they are stuck in the 1980's.

Update: O2 has addressed the issue we have faced and have refunded us. Overall, I am pleased with the outcome, its a shame it took a trustpilot review to get it.

Update: I have submitted the information they have requested today, lets see what's happens

I am appalled by the predatory billing practices of this company. I cancelled two mobile contracts, well within the statutory 14-day cooling-off period. Despite having never used the numbers, the company is attempting to charge me for a full month of service.

Under the Consumer Contracts Regulations 2013, I have a legal right to cancel distance contracts without penalty. Forcing a month's payment for an unused, cancelled service is not only a breach of consumer trust but a clear attempt to bypass UK law.

I have already revoked my Direct Debit and will be escalating this to the Ombudsman if they do not immediately confirm a £0.00 balance. Avoid this company if you value your consumer rights—they make it easy to sign up but will try to squeeze money out of you even when you legally owe them nothing.

I would give zero stars if possible. O2 business have owed money to me since last July.

Offered me compensation but have not even had money owed back yet or compensation!!!

They even send me random people's complaint cases even though case number on top of every email...

Very poor customer service even though they reply on here they still don't follow up with a call.

rude customer services never return calls and don't respond to complaints

Avoid this company at all Costs

Would love to give no stars. What has happened with 02 poor coverage terrible customer service. I raised a complaint in May 2025 and been totally ignored spend over £600 a month and half the time we have no service. Promised callbacks and get no callback very poor company avoid at all costs

What has 02 become? Once one of the most trusted mobile phone / network providers is now the worst. Took no less than 3 months and umpteen calls to be able to set up and view my account online to manage bills etc. Horrendous network coverage - never seen 5G, rarely 4G, mostly 3G which is being switched off before long. Data usage through the roof. 6G allocated fully burnt up 2 weeks into the month with no explanation as to why. Times of usage on my online account are middle of the night and when questioned the call handler said ignore the times they will be wrong. How am I supposed to know when the data is being used then?! Previous contract (Sky Mobile) had 4G and never went close to using it - nothing has changed in terms of travel, aps, usage etc. Now left with business mobile with shocking network coverage and no data for 2 weeks until it renews, or purchase more. Wish I’d read the reviews.

Agent spends ages walking you through irrelevant phone questionnaires without dealing with your request directly - this is poor training and exhausting to experience. In 2026, it's ludicrous that a digital eSIM has to be put in the mail - it's a QR code which could just as easily be texted or sent via a secure app. I asked if I needed to make the request by fax and had to explain to the agent I was joking to make a point. I know, I need to have more patience but who has time for this?

Serious issues with O2 Business when adding a 2nd number and traveling abroad

I'm shocked to see them get 1.5 stars - every email I have received has been flagged by Google as spam/fraud. They don't seem to have the basic security in place, and I have endless calls from fraudsters enquiring about my O2 account from the day I signed up. They tell me I've signed up for a 3-year contract (which doesnt sound legal to me) and have refused to show me any evidence of it. Not just poor service, but genuinely scared for basic GDPR.

Crooks, you just stole £1234 from me after you assured me I had settled up last month. You employed a debt collecting company called credit style to try and gather £1500, when I called O2 about it they said that this was wrong and I owed £404 which I paid and thought this was the end of the matter. But no, Credit style continued to get in touch with a £1500 payment demand. They asked for proof of the £400 transaction which I gave them and was assured that was the end of the matter. Then I received notification from my bank that I was in overdraft, £1234 had just been taken by O2 business. I spent over an hour on the phone trying to get to the bottom of it, being pushed around from person to person every time having to give security details. Then they just hung up and didn't even bother to call back to try and resolve the issue. You can spend hours on the phone and they still rip you off. They are a disgrace.

I can't log into my business account and I keep asking to change password and never get an email back to do this,

Rubbish service!!! They drop me from one department to another and no help at all. No help with connection lost for two weeks at work. 2 weeks no internet! When I'm cancel my agreement with them, they send me huge final bill with termination fee of £500. Ridiculous! Avoid this company.

Shocking customer service.
I have had an ongoing complaint with O2 business since March 2025.
The Communication Ombudsman service have found in our favor, told O2 to reward us £200 in compensation but still O2 business have not sorted our problem.
After being on hold to them for another 20 minutes in a last ditch attempt to get it sorted they have just hung up on me.
At this point I am happy to pay the hundreds of pounds to close a number that should never have been renewed in the first place just so I do not have to deal with this incompetent company again.

If this review stops one other person from taking or renewing a contract with O2 business that will be fantastic.

You have been warned!