If this isn't bannable I don't know what it is.

I don't know why Riot even tolerates players like this,and I'll never know why they don't even ban them,just let them play.Anyways,Soraka,our support who banned my champ that I wanted to play before banning phase,for unknown reasons,decided that she wants to troll on his account(SHE LITERALLY SAID THAT) because she's EUW player,and that her account on EUNE is for troll purpose,like ok.8 mins into the game she leaves bot and comes top (to me) to actually troll me in my lane,taking my farm,AND BUILDING STORMRAZOR on SORAKA,THEN PHANTOM DANCER second item.Every single second she keeps split-pushing,feeding every single enemy person that's out there.I also have replays of pure Griefing,just I dunno how to post it here on boards. I expect this thread to get instantly downvoted because it's just another crying because of teammates blah blah blah.I only want to know how is this player behaviour isn't even punishable,Riot's just gonna let him/her play because that he/she wasn't trolling "JUST HAVING BAD GAME". Go check out my profile on op.gg,Pantheon game,You'll see Soraka who goes 0 11 by the end of the game.Can't add her profile because of naming/shaming rules.