The Federal Trade Commission (FTC) does not have authority over banks, savings and loan institutions, and federal credit unions. However, you can file a complaint with the Consumer Financial Protection Bureau (CFPB).
You can file a complaint with the Consumer Financial Protection Bureau (CFPB) about a bank by: Visiting the CFPB's website, Calling (855) 411-CFPB (2372), Submitting a fax, and Sending it through the mail. https://www.consumerfinance.gov/complaint/
NOTE: They cannot become involved in complaints that are in litigation or have been litigated