Riot its not punishing people who forcibly lose the game

Everytime some random dude decides to troll he either starts running it down and suiciding or goes to a sidelane refusing to play the game. I know there is a report for refusing to play the game and for intentional feeding but im pretty sure those people arent getting punished..the amount of games somebody makes you lose on purpose its only growing up that only says that riot isnt doing s{{champion:157}}t about people who do this.
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