I got tricked by a troll on champ select.

He was first than me, and for such he picked my champion varus and wanted to trade. When my time come he started saying random champions that were banned. I thought he was just joking around, but then he said one support and I picked it. We couldn't trade, because he didn't have that champion. He trolled me, made me start a ranked game as a yuumi midlaner. I left the game. Am I getting banned for this?
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