I have been permanently banned and I dont know why

I tried contacting Riot Games about my perma-ban but I haven't gotten a response. I do not understand why I have been banned and would like some help on the matter. I believe my account has been hacked because I checked op.gg and I found games that I do not remember playing. Plus the email that was sent to me about the banning is unreadable. Is there any way to get unbanned.
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