Terrible experience with O2. Involved a fraud case that took nearly half a year to resolve, when it's quoted that they would look to resolve in under 28 days. It seems Customer Service Team and the Fraud Team operate where the left hand doesn't speak to the right. My credit score was affected and nearly had debt collectors at my door. Very stressful few months. When it was finally determined that the fraudulent activity was legitimate, I was promised the fraudulent account would be closed. It wasn't closed and I continued to receive bills still charging me for a phone I didn't purchase, which nearly put me back into debt collectors again. I had to hound customer service to check the fraud ticket, close the ticket and remove the outstanding debt. I didn't think I'd need to remind customer service how to do their job. I will never go back to O2 and I'll continue warn people to not take up a contract with them