Unfortunately I was told something very similar when I called O2 customer service on Sunday night having had issues since Friday. I was told then that O2 were alerted to the problem and it would be fixed shortly. I think they tell you that to shut you up and get you off the line. It's infuriating. I only moved to O2 a month ago so once I've had a decent cup of coffee I'm going to get on the phone to them and give them a piece of my mind about their service :/