THAT doesn't pass the smell test. especially the bit about having several copies.
Write him an email, telling him that you're sorry for his loss and that you feel his pain.
Then ask him to provide you with a copy of the credit memorandum which he issued to your account.
(More ammunition should your credit card get charged but not credited.)
And I won't ask who the seller is, but what is the positive/negative ratio on his feedback from buyers?
To the seller's credit: He has a perfect feedback record and issued an immediate refund. I always check that since I made that mistake ONCE. Since there is a contradiction in the communications from the seller as to whether they were really in stock, as stated in the AD, or stolen in shipment prior to arriving; but having received a full and prompt refund I really believe this: The seller listed the items before he received them and they really were stolen (by a teamster UPS driver), or someone from the Kerry campaign offered big bucks and a nondisclosure clause.