I can guide you on how to correct the payment posted to the wrong bank account, Liz.
You can go to the Bank Account History page to correct the payment transaction.
You can check out this article for more details about editing transactions in an Account history: https://community.intuit.com/articles/1776860.
I have articles here about recording payments:
Just reply to this post if you need anything else with correcting payments. I'd be glad to help.