Your contractor contract should have a clause to specify that he must return overpaid money. My employment contracts all had that. This helps dealing with this

Your contractor contract should have a clause to specify that he must return overpaid money. My employment contracts all had that. This helps dealing with this sort of issues :) Citigroup, Revlon and Bridage certainly have long complicated contracts on that loan, that should cover what to do. Well, I really hope they thought of covering the basics while drafting a billion dollar loan.