Absolutely terrible service. My internet keeps cutting off after a week every month since June. I've called them probably twice a week, either called, messaged, went in to see their 'gurus' and nobody can seem to find a fix for this. I have had countless staff members telling me the whole of the UK's internet is down - which it obviously isn't. If I wasn't in a contract I would have cancelled my phone with them. I have been with O2 for 10 years' and never had so many issues. Absolutely pathetic customer service, with no resolution in site. I just keep being redirected to different teams and constantly having to call up and chase this when your staff do not actually log the issues. Honestly if you don't have an account with O2 I can only advise you avoid them like the plague. Such a big company that doesn't care at all about your issues/ finding a resolution to them. These issues have been ongoing since June and I have been unable to get any refunds for all the money I am paying for internet that I can't even use.