Your first option is through paypal.
DO NOT say that you didn't authorize the transaction b/c you did, and once they confirm that (which they can) they will drop your case like a hot potato.
I can't make much sense of what happened from your post, but both e-bay and paypal have separate dispute measures.
You also should have purchased the insurance for the shipment and NEVER deal with a seller who won't...that protects you both.
The correct term is: You paid for something you did not receive.
Make sure you have the printouts saved, confirmation numbers of where you paid on paypal, as they should have not only popped up on the screen, but paypals sends a confirmation as well.
Ebay and paypal are both very good at backing up their transactions.
If you paid through paypal those people DO NOT have your credit card information.
Realtor...see profile for more.