I can mute insolts and flame, but yet i can't mute feed and troll.

So why it feels like Riot give feed and troll a different treatment than to insolts? Now i see a lot of players who keep silence in chat, but start to troll for any reason, they feed in not obvious way, they say not a single word in chat so they don't give Riot any reason to ban them, but they ruining the games intentionally. How i am so sure? Usually they tell it on pick stage. Like, 'i got autofilled/main banned and im gonna troll if you don't evade'. That's just disgusting. If there is a ragin kid, or a racist, or just some tilted guy who insolts everyone - i just mute them. Very often they are trying to play, so mute+no chat = good game. But if there is a troll or a feeder i can't do anything to distance myself.

I am not saying that report system does not work, it does, i get like 3-5 report feedback every week. But i think Riot should punish feed and troll a lot faster and harder than insolts. I don't flame, and it's bad to do that too, but man, that trolls disgust me.

in 90% of the games i get like at least one guy who does this:

1. tell your team u gonna troll if they don't leave champ select.
2. tell your team that you go afk farming and everyone should surrender at 15
3. spam surrender vote even though it fails 1 to 4.
4. forget about trying to win, play like you're almost sleeping.
5. go feed
6. if don't want to get banned, go feed in not obvious way - fight to death, but keep farming and pushing lanes, tell that you're just bad player, but in lobby after game tell your team they sucked and you just w8ted for the game to end and was having 'fun'.
7. if your team manages to win without you, spam "ez" in all chat.
8. get ganked, say that jungle is bad and go troll.
9. give up when team score 15/19, when ur team gave up fb, when u gave up first tower, when you feed darius or jayse.
10. when u get autofilled take soraka jungle or whatever troll pick u want to.

Dear Riot, this type of behavior is a lot more dismoraling and crushing than anyone calling me re-ta-rd or anything else. Do something.