i got banned for someone else trolling my game

A guy too my jungle (in a draft pick) and trolled me the entire game, even so far as to try and lie to the enemy team that I was top (i was jungle btw). Either way, in game i called him a troll a few times and he flamed me even more and at the end of the game I, ME,I got suspended 14 days for him ruining my game. I don't understand this game at all.
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