Riot Help

I got banned for "feeding" but i had an afk in the game and was actually trying but i just got focused and destroyed then accoused of feeding and this is a NORMALS game let me add, people feed in my game all the time and a 14 day suspension is absolutely ridiculous for "feeding" which i didnt intentionally do. but I have people afk and feed in my RANKED games all the time but they dont get banned yet i do for a NORMALS? like honestly riot please help!