I'm going through this process right now 
actually.  You should try calling the seller as 
well.

After 30 days, you can file a fraud report.  You 
can get back what the final listing price was 
less $25.  (Up to $200 maximum per item).

At this point in time, it may be too late to 
cancel the money orders since the seller may have 
already cashed them.   It still wouldn't hurt to 
try, though.  (If can get the money orders 
cancelled, who knows, you may get double your 
money back if eBay does an insurance payout.)  
Later.