I'm very sorry to hear that.
1 - Has he informed the police, in both countries, he may not get any money back, but at the very least he may get some redress in the courts.
2 - How did he finance the costs? If he paid by credit card or some bank loans, then the finance provider has a legal responsibility to ensure that the service purchased is provided, and consequently will be obliged to refund him.
I hope that things turn out OK, but don't hold your breath.