CISAS can help to sort out a complaint with us as a communications company.

You're not charged for using the service. They investigate complaints fairly by listening to both sides of the story and looking at the facts.

If you'd like to know more about the way they work and what they can help with visit the CISAS website

You can call CISAS on 020 7520 3814 or write to them at:

CISAS
100 St Paul’s Churchyard,
London
EC4M 8BU

The Financial Ombudsman Service can help if you've complained about a financial product and you're not happy with how things have turned out. It doesn't cost anything to use the service and they'll look at what's happened and give an unbiased view.

You can call the Financial Ombudsman Service on 0300 1239 123, email complaint.info@financial-ombudsman.org.uk or write to them at:

Financial Ombudsman Service
Exchange Tower
London
E14 9SR

There's an online leaflet you can read with more information on what the Financial Ombudsman can help with.

You can view our complaint data here.

If you’d prefer, you can raise your issue with Resolver - the free, independent complaints service. Learn more about Resolver.

If you’re a Business customer and your account is Partner managed, please make your complaint directly to your Partner.

Raising your complaint with O2 could mean it takes longer to resolve, as sometimes we have to pass the information onto the Partner in question. Find your Partner’s contact information.

Ofcom is the telecommunications regulator, which means they oversee certain policies and processes in place for customers.

Ofcom doesn’t investigate individual complaints from customers, but they can provide information and advice.

If something has gone wrong, please let us know so we can try to put things right – we have dedicated advisors who’ll be happy to help. Find the best ways to contact us.

If you believe we’ve handled your personal information in a way that doesn’t comply with data protection law, you can make a complaint to us. 

Completing our web form and providing the requested details will enable us to log your complaint and respond promptly.  

We have a separate process for handling your other individual rights such as accessing your personal information. You can exercise you rights as detailed in the Privacy Policy. 

You will find information about your right to complain to us or your right to refer your complaint to the Information Commissioner on their website:  For the public | ICO.