When i try to play online my game says your gamertag has been ban de from this feature.

If i change my gamertag a get disbanned

If you have a ban with this gametag it will not reverse the ban simply by changing it. Next time follow the rules and you will not have to worry about it.

You can contact Turn 10 at forzafb@microsoft.com for any questions about the ban.

Bans or enforcement of Xbox LIVE’s Terms of Use and Code of Conduct are not discussed on the forums.