Hacked

My PSN account was hacked. Funnyproject's too. Now I'm at level 55 when I was at level 46. I DIDN'T WANT TO ADVANCE LIKE THAT YET!!! It won't let me prestiege, now my rank's all screwed up. I hate those sort of matches but I was really stupid to hit the sprint button which unlocked everything. Any ideas on how to get out of this and if I can still unlock things? Funnyproject's name is now in purple, he has EVERYTHING in Mw2, and I'm just at 55 now. PLEASE HELP!