I told him I would call him back tomorrow.
@ Jesper and David
First of all you report these scammers to Upwork (that is, if you don't want your own accounts suspended) and then you take a little time (no matter how qualified you are) to read everything there is to know about the site.
Scammers are everywhere not just on Upwork, who does what it can to zap them. Acquiring a little knowledge on how they operate should be part of a freelancer's arsenal. Upwork gives a few pointers - Google gives a zillion ...
IMO Upwork does not do enough to zap the i****s who are too needy or greedy to recognize the danger signals and who are "tempted" to fall for fraudulent deals.
Could you please click on my name and send me a private message with more information, screenshots of communication or links, and I'll share those with our team for further investigation. Thank you.