The error is all on your part for violating the Xbox Live Code of Conduct with unsportsmanlike behavior in online races where you repeatedly crashed other players, including waiting by the side of the track to wreck players a lap or more ahead of you. Those actions are unjustified on your part and shall not be tolerated. This is a first-time ban of seven days (168 hours) as imposed by employees of Turn 10 for the illegitimate actions.
Neither bans nor the enforcement by Turn 10 are discussed on these forums. You may send an email - threats or asking for compensation for your own actions are unacceptable - to them at firstname.lastname@example.org.