Unfortunately the XBOX Live enforcement team usually has the final decision when it comes to profiles and gamerscores. I would attempt to contact XBOX Live support as they may provide additional details concerning your account.
A gamerscore correction occurs on a player’s Xbox LIVE account when they gain achievements through avoiding gameplay and using external tools. Xbox LIVE is committed to keeping the service free of this type of behavior as it violates the Xbox LIVE Terms
of Use. When abnormal achievement or gamerscore activity is found, Xbox LIVE modifies the gamerscore of players who meet specific and automated criteria.
An Xbox LIVE player who obtains their gamerscore in this abnormal way will:
Find their gamerscore reset to zero.
Be unable to regain all previously earned achievements.
Be labeled as a “cheater” for the community to view.
Although players who are identified by these criteria will start from a zero gamerscore, they will still be able to gain achievements for future games. In other words, we give them another chance to earn future achievements by earning them as other “fair”
players do. The original gamerscore correction remains permanent without any way to appeal.
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