I think you really don't have a choice but to have the Treasurer and the COR contact this person, by certified mail, with a demand letter. Given their financial pattern of behavior, that money is likely gone. When I was a CM, we had one family that needed help in order for their son to attend Pack events and even summer camp. We comped them on many events, and found Council programs so that the boy could go to camp. The flip side of the coin is that for 5 years, the boy was the top Popcorn seller- usually by a wide margin. One year he sold 30% of the Pack's total sales. The amount really isn't the issue. It is a clear violation of Scout Law, as well as local laws- it is theft pure and simple.