Why does the Report System even exist?

Every time I report someone, nothing happens (usualy for flame and trolling). My whole team reports someone, nothing happens (same reason). Once about 6 or 7 ppl reported someone, guess what...NOTHING happened. I mean why does it even exist when nothing happenes? Why dont you make some ppls look trough the chats of the reported and decide if they will ban him or not? This might make LoL better and all these trolls and flamers will be gone
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