I was Permanently Banned and I need help figuring out why.

So on 1/4/2017 I was playing league of legends just fine and I lost a couple of games in a row so I stopped playing. Next day (1/5/2017) I get suspended and I need help to explain that when I tried to get help to change my email a long time ago that I was never helped. so the warnings that were "sent" never got to me or else I would have stopped doing whatever it was I was doing.
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