MMR Boosting ban.

I got banned for MMR Boosting, and I didn't share my account with anyone. I don't know what really happened I was gold 5 and I had a really good weekend and got promoted to gold 3. Then I was happy with my league and left it like that. Then I went playing on flex more like for fun (I hate normals) and I was hardstuck silver 2 because I was playing new Champions that I don't main in solo queue. And I got banned 14 days no more rewards nothing.. I just think EU support team is kinda bad no offense, tried to explain it and to show me proof. They say they can't show it to me. How they can't show me proof that my account was banned, I invested money and time in it and they ban it without showing anything. (I got banned on my 1st account for flaming, at least I got proof there I was toxic and got banned, but for this one it's not fair.) I just wish I know if I can move my problem to NA support, EU feels like don't care at all about players problems.
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