I had a recent problem with the leveling up. I stopped receiving experience from the matchmaking/spartan ops games i played, so i can't level up. I haven't played any "cheating" game, I only played against random rivals I had never seen before, so there's no way 343 should think that I'm cheating. I level up pretty fast, that's true (from 42 to 48 in 24 hours), but never done it cheating. I also never received any message telling me I'm banned or anything, so I please want to know what the hell is going on.