Riot Banned My Account for No Reason

My main account Fucking Shit (yes i know the name is ridiculous) was just banned saying i was being unsportsmanlike. I have never said a word in chat since i started playing this game in the beta. I have 0 clue how i'm being unsportsmanlike. Riot can check. 0 chat logs because i never type in chat.

Also if it is for my name, I have had it since beta and you have never given me a warning and it seems absolutely asinine that you would completely permaban my account over a name and not even warn me or let me change it.

Fuck you Riot I will never play your game again