Friend sent message to himself on my account and got me banned.

You can always submit a case review if eligible. Here is the info on how to do that: http://enforcement.xbox.com/home/howto#sub-topic0-6

Also suggest you change the password for your account and not share it again.

Now I think my friend lied to get me banned cause he sent me a message saying don't get banned after I got banned. So now I think he false report me to get me banned and Now I just want answers. If he did get me banned than I want to de-friend himself and
block his as from Facebook and everything.

I do understand that I am responsible and I received a 4 day communication ban from a message sent by them, but I was suspended from him using a card on my account to gift himself something and after I got it refunded I was banned for the use of the card.

Litteraly the same thing happened for me was texting my best friends that i knlw in real on xbox and sent few messages and few msg later couldnt sent anymore message so i went on my second account trying to tell him to txt here cuz i got ban on my other,
and few messager later i got banned, so i went to tell him on facebook and he told me its happening the same thing to one of his other friens that i knlw a bit in real tho and by that time my friend got banned tho, ita litteraly crazy in bout 10min 4 account
and 3 ppl gor banned for a thing they will never know

But the message that got me banned was literally sent 4mins before I got the email to say I was banned.

I know others that have sent me worse messages that I've reported didn't get banned as they still messaged me the days after reporting.

So it's almost as the ban I got was automated.