No message was received either in game or from my microsoft account linked hotmail. Can someone explain this to me, or is this just some nice Xmas present the game admins randomly give out to people?
How did you find out? There are no “random” bans in any of the games where Turn 10 enforces the Microsoft Code of Conduct. Any ban is based on violation of the regulations.
If you’re not able to access some part of the game, you should try doing a proper hard reset of the Xbox One console. If that doesn’t give you access again, check http://support.xbox.com/en-US/ to make sure it isn’t Xbox Live have problems, then write Turn 10 at email@example.com and include any gamertags which have played on your Xbox One in the email.