No offense, but last time I checked, two wrongs don't make a right. You tried combating trolls with AFKing from a game. Which is also a bannable offense. If there was a person on that team that wasn't trolling, you made their game even worse because they were less 1 person. I honestly have a huge problem with people who give up and just sit in the well when they could be helping. I don't care if someone is feeding, as long as they are trying I could care less. Next time that happens, put all the trolls on ignore and just play the game as if you were playing by yourself. I'm assuming you were solo queing so that was already the case anyway. Another way you could avoid that is queing with a group of friends.