What would you do in this instance please

[forazzurri2axz]

Sold a T206 PSA 6 for 180.00; was paid via paypal and shipped with insurance

Buyer "M.S." said he did not receive it and after waiting a few more weeks, I refunded his money via paypal and put in a claim with USPS claims dept.

Got a letter this week from USPS denying my claim since "our records indicate the package was delivered as addressed" (address was correct)

Saw the card was in his registry AND VERIFIED WITH PSA REGISTRY DEPT.THAT IT'S THE SAME CERT # as the card sent!!!

Emailed M.S who said he's stunned that they denied my claim and he's going out of town but he'll be in touch next week (he has my phone # also)

Called paypal who said they only process disputes by the buyers!!!!!!!!!!

What would you do if it was your $$$$ in question???

thanks in advance
Bill