Try putting in another claim as "Significantly Not As Described" (SNAD). You should automatically win the case, That is one of the two reasons for making a claim. It is famous. (The other reason is INR: item Not Received). ... ... .. You should always pay via credit card; worse comes to worse, do a "chargeback." .. ... .You can leave neg feedback; don't forget to give him just one star on the "Detailed Seller Rating" system for all items (DSR).
Robert