Hi there! Unfortunately Support agents will not be able to help you out with this issue. The only people who deal with this type of thing is the Enforcement Staff. Depending on your issue, please refer to one of the following links. Thank you!
For account suspensions, please post in forums.xbox.com/.../41.aspx.
For console bans, please read http://xbox.com/consoleban.
For "marketplace theft" issues, please read forums.xbox.com/.../62589.aspx.
For general info on violations and penalties, please read support.xbox.com/.../terms-of-use-conduct.