Likely far too late to save the reputation, but at this point it would be all he can do to stop the investigations and civil suits. Again, everybody, it is only $100 to file suit and easy to represent yourself in these cases. That and if he doesn't show up then the judge will side 100% in your favor if you bring your proof that you paid and didn't receive product.
After that I happen to have contacts in collections so for less than $100 in disbursements can put liens on everything that person owns or has attempted to sell during the specified timeline.
It's only when you bring a lawyer into it (not usually necessary in civil suits) that the costs add up.