Banned for intentionally feeding? But, it was just a hard game...
UPDATE: Unbanned :) Thank you Riot for your hard work and taking the team out of your way to look into my case!
https://i.imgur.com/JkKRl1S.png
https://i.imgur.com/UCUfg2u.png
https://matchhistory.na.leagueoflegends.com/en/#match-details/NA1/2790107007/85209867?tab=stats
^^^This is the match^^^
We were completely outclassed and all lanes were dominated very soundly... ;~;
The Rioter Deme Lovato was very nice however! They said they would take it up with their team! I am very confident this error will be remedied very swiftly!
While they mentioned something about that ban label also being used for afking and griefing scenarios, as I neither afkd'd nor do I play in a griefing manner (you do not get from S4 to G4 in 1-2 weeks playing like a jerk!) I know that I completely have nothing to worry about! :)