Having problems with O2? Use Resolver to make a complaint.
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Resolver is not affiliated to, linked with or otherwise endorsed by O2.
We are an entirely independent issue-resolution tool that enables the raising and handling of consumer issues, making complaining simpler for everyone.

How does Resolver work?

Free forever

Resolver is free. No adverts, no hidden costs. Just raise a case and leave feedback after. Simple! We’ve helped millions of people find a resolution. Get started now and let’s get this sorted.

Know your rights

There’s no jargon in our rights guides. Instead, they’re full of the info you need to get things sorted. We’ll always be on hand with guidance and support to help you get the results you’re looking for.

Get your voice heard

You can be certain that you’re talking to the right person at the right time. We automatically connect you to contacts at thousands of household names, ombudsmen and regulators to find a resolution.

Here's what some of our 4,054,663 users had to say

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Ronnie M via facebook
The tools make it really easy to raise an official complaint. I escalated the complaint explaining that all of the conversations were being logged on the site. They settled my complaint very quickly after the escalation. I highly recommend using this site to complain if you've hit a brick wall with a company.
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Helping you with O2

How do I make a O2 complaint using Resolver?

If you want to make a complaint about O2 using Resolver, then the process could not be simpler. Read and understand your consumer rights then answer a few simple questions to help Resolver prepare your email (which you can review and edit) that clarifies the issue, and gets the best from your complaint. You will be given the option to make your complaint by phone via our mobile app.

How does my O2 case file work?

Resolver allows you to keep a record of any email correspondence sent between you and O2, as well any phone calls made via our mobile app. You can make private notes about your case as well as set yourself reminders. Furthermore, Resolver sends you notifications when it's time to escalate your case to help keep things on track. If you cannot resolve your complaint with O2, Resolver enables you to escalate it to the relevant regulatory body – the contents of your case file is sent as supporting evidence.

Is it free to make a O2 complaint via Resolver?

Absolutely. Making any complaint via Resolver will never involve any costs for you, the consumer, other than the cost of any phone calls you make (at the cost of a national-rate call).

Contact details

To view the O2 contact details press the button below

View O2 complaints contact details

About

O2 is a mobile telephone service provider that also offices a range of internet provision and financial services. It is the second-largest, mobile telephone network provider in the UK after EE.

It was originally launched in Britain in 1985 as Cellnet, a joint venture between BT and Securicor. In 1999 it became BT Cellnet and in 2002 was rebranded as O2. Since 2005, O2 has been a subsidiary of Spanish telecoms giant Telefonica.

Working with

With Resolver you can send your case to key ombudsmen and regulators including:

Resolver is a member of