I believe a lawsuit would be in order.\n\nIf not that then I'd tell everyone of the Millionaires friends just how big a dumb ass he was.\n\nI'm a vengeful motherfucker thou. \n\nedit: After thinking about this I would bet money that a letter from an attorney threatening a lawsuit would get him to pay up.  You may or may not win the lawsuit, that's not the point the point is to shame him into doing whats right.  If he's 9 figures rich having a lawsuit like this go pubic will not be good for him.