It's simple - File a claim/wire recall with your bank to try to pull the wire back as it was sent to an account in error, (they won't be able to get it back for you as its too late, but you want that wire recall request on paper) once you have proof of the complaint with your bank file Suit against the ISO and their owners (Since it's an ISO you work with you have the owners names, or at least should have the owners names) then pray for the best.

Use an MCA attorney if you're looking for aggressiveness, be ready to pay a 25% contingency fee. (If your attorney is aggressive enough he can collect the additional 25% in damages too)

You'll win the suit. question is if they'll pay once you win.

Good Luck.