You need to clarify "admin"? Are you meaning "admin" of Xbox LIVE itself or one from the Forums?
The "admins" or more accurately the Moderators from the Forums only work on the Forums and have little to do with Policy Enforcement for XBL itself. The Forum Mods are found anywhere on the Forums and are designated by either a "M" or "V" on their Profile from
The "admins" on XBL are known as the Xbox LIVE Policy Enforcement Team and do not Reply to personal Messages. The only place they can be found is on the Account Suspension Forums.