I highly suggest you research related information / privacy laws and banking regulations in Louisana and federal statues. A lot of times, acts passed by legislation include a clause that allows recovery for attorney fees, pain and suffering, and even punitive damages for cause of action (proof your privacy was violated) etc.
If you could list off a bunch of facts that would show to an average individual probable cause, I would suggest contacting an attorney. Matters like these are complex and can get incredibly difficult.
Just know, a LOT of lawyers take contingency fee agreements. Go off a directory in the state of Louisiana, grab a huge list of emails and state your case, and any non-sensitive information to proof of your claim. A lawyer may be interested in your case.