Legal Question in International Law in New Jersey

Doing business across international boundaries is different as you have found out. Your ability to recover against this company depends on how they are organized (what form of business) and whether they are actually authorized to do business in any State of the United States. Depending on the amount involved, your best best may be to hire a lawyer in Pakistan and sue there.

If the occasion arises again, don't extend credit or prepay. If the transaction is large enough, the company should have a bank in the US willing to handle an irrevocable letter of credit. Otherwise, pay by credit card or with some other means where you have recourse.

See also: http://info.corbettlaw.net/lawguru.htm