Yesterday, I was inside Call of Duty 4, finding a match for Domination. A couple minutes later, I realized ,everyone was running fast, obviously a modded match. So, right when I was about to leave, I didn't think it would hurt to just kill maybe one person, so when I go to kill one person, I realized my exp that was given didn't go up, in fact, it went down. I was around level 20, and now i'm -47754 under level 1? Can I please get some help.