Why banned?

Logged in today to play line just to discover that I have been banned. Why??? I haven’t been playing live for a week or so even though I was able to do it a couple of days ago. What has happened and for how long am I being banned?

Unsportsmanlike conduct in online races in violation of the Xbox Live Code of Conduct, i.e., wrecking, crashing and attacking the cars of other players attempting to fairly compete in accordance with the rules.

The first-time ban is seven days (168 hours) from the time placed by Turn 10 employees, and neither the ban nor the enforcement of the regulations is discussed on these forums. You may send an email to forzafb@microsoft.com, but chances are the ban will expire prior to receiving a response.