Reset Game/Service Record

My profile was used without my permission to play Halo Reach. I want to play the game myself, from start. I have deleted the cache, uninstalled and reinstalled the game, and cannot reset Rank or Credits. There must be a way to fix this when it’s a technical issue/unauthorized use? How do I contact Halo Support? Microsoft is not helpful.

Sorry, mate. There isn’t a way to reset your account’s service record. You can always create a sock, but there aren’t any resets.

Anyone know how to contact Halo directly?