Racists, flamers always the worst players?

So for the last 3 games i've played, after the game the worst player on the opponent team has either flamed me about the game, claimed that they are ''plat/diamond smurfs '' or being racist and saying etc ''go in a zoo and eat some bananas u black monkey'' (Im white fyi...). How do u get these players banned? Last season i got 75 chat ban and 35 ranked ban for simply telling a troll to get out of my lane..... But i bet you these guys wont get any bans whatsoever, even tho they should atleast get 500 games chat ban and maybe 100 ranked ban if u compare what they did to what i got banned for. Riot please fix ur banning system.
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