I'd start with a complaint to the credit card company.
They are the only one that will be interested in helping you. (IMHO) and depending on the terms of your credit card, you maybe able to cancel payment. You need to report it to ebay and paypal also, and don't waste time doing it. There is a time limit normally on filing complaints. If you miss the dead line your options deminish. Also write another mail to the seller telling him your reporting this to all the above. Maybe it will stun him into action. He's feedback is decent so maybe you will have some luck. I have heard many times though that a seller will drag their feet waiting for those deadlines to occur, so start lighting some fires!
Good luck.
Plaz
