Unjust suspension?

Does anyone else think that Riot suspends/bans/chat restricts players who don't deserve it all. Me and a friend went through the same thing of getting chat restrictions and then suddenly being suspended. We don't know why (we weren't duoing btw) and when I try to contact Riot about it they bring up the chat from a ranked game I had where I was constantly asking our Lee Sin to stop trolling and that he's being childish. Is that really a reason to be suspended?
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