Riot Do trolls ever get banned ?

im talking about the people that have their champ banned then troll pick or the people that flat out troll in games, the people that rage quit, the international inters or is that option just in the game to make people feel like trolls get banned ? over 8 years of playing and iv never seen a person i reported for trolling even when 9 people report ranked even more so it should just be a flat out perma bann
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