Given how buddy-buddy payment industry is, I'd advise against this unless a lawyer is willing to take it pro-bono on the basis that your case is so strong it'd be a layup.
The same way insurance companies and casinos collude against those who lose them money, so do payment industry companies. You might beat the case but you won't beat the ride.
[1] https://www.mtraweb.org/wp-content/uploads/2022/10/Contact-l...
[2] https://www.fincen.gov/contact