Balance transfer screw up advice needed please

Overview

So I got Credit Card X in order to do a balance transfer off of Credit Card Y. The transfer didn’t show initially, so after the card showed up and I verified it still wasn’t showing, I initiated it again. Now both have shown up and CCX shows a balance of twice my balance from CCY. 🤦🤦🤦🤦 I’ve tried contacting chat help for both and unsurprisingly neither ways helpful because they were both probably AIs. I’m wondering if anyone knows… 1) which company I should contact to try to resolve this, an

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