I know exactly what you mean.  I just recently had 
an eBay auction where the guy claimed he sent me 
the right address and then he refused to pay for 
shipping again.  He threatened to report me to 
eBay and spam my feedback account (which I've 
worked my butt off for), so what was I going to 
do?  I sent his stuff the cheapest way humanly 
possible...with any luck it'll take 2 months to 
get to him!  It would certainly serve him right 
for being a moron!  Best of luck with your own 
situation!