what is the suspension about?

I was banned for 14 days for something like unsportsmanlike like. I was trying to help the team in the whole game as a support. ADC blames me for didn't initiate teamfight under turret within 10mins of game. ADC decides to feed after i was killed for the first time. we have top laner never helps team and ruin jungle game & bot lane ADC feeding on purpose for the whole game. How would i get banned for unsportsmanlike like? there arent even any contact number for this automatic decision. its the end of the season. when the system makes wrong judgment. why you i be the one to get punished? Rank is competitive game mode. if you wanna troll or have fun, you can do it in normal or other mode. Ive played this game for 6 years. this is the first time im in here. I would accept all punishment if that is my mistake. But this time is too unfair. just because i dont know how to write an awesome report doesnt mean you can treat me like this RIOT!