I got unfairly banned

Unfortunately, I got banned for talking to a friend. It was my first time happening and I was like "What's going on?" I feel as if this is totally unfair due to the fact that i've never even got a chat restriction or anything! They straight up banned me. I feel as if people like me are being banned straight up for no extreme reason. I would understand if I got my 1st and 2nd offence for it but they straight up banned me. Please hear me out riot is there anyway I can be unbanned? I don't care if you chat restrict me but this is going to far! They banned me for 14 days.
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