I think OP needed "emergency service is cash up front".

In a different domain, this is the painful lesson of almost anyone who tries to help people in a bind -- you can try to help, but yours is unlikely to be the advice that sets them straight, so you shouldn't get too invested with unproven or, especially, proven unreliable actors.

It's worth keeping in mind that the only practical "saving" for the OP will result in not doing the job at all, since this client most likely doesn't actually have the money and never will.

It should be, oh, short-term rush job in a foreign country for a sketchy client? That is most definitely cash up front time. Oh, you can't afford that? Sucks to be you, not going to do it.