I had a minor dispute with a car dealer here (they were having a contest and the “prizes” were not as advertised...long story). I wrote to the BBB and the state Atty General. Several letters later... got a small settlement offer. Was worth the effort at least. But I think it is somewhat intimidating to get notices from the attorney general, SEC, etc. Call the bank and talk to a bank officer and ask them what agencies regulate them, because you are going to send off letters to all such agencies, due to their inability to keep your records straight. Be sure to take notes, and make sure whoever you talk to knows you are taking notes (ask how to spell their name, who is their immediate supervisor, etc.). It might resolve itself after a call or two and a couple of letters.
After all this, we are recording all the phone calls. The only issue is we can’t email them the recordings. Fax only.
I was thinking of posting to an Internet Site. But it has private info.