HELP ME!

I just discovered the world of blackberry and found the Want to Buy, Sell, Trade section and found someone selling a new Blackberry 8330 for Verizon.

Contacted him through the email listed and we set everything up (paid on a cc through paypal) and the phone was supposedly shipped on May 30th. I asked for shipping information and have recieved nothing in response. I have sent many, MANY emails since then demanding some sort of information (realizing that I have very little) and have heard nothing back.

I'm not sure what to do next! It's been almost two weeks since it was supposedly shipped (from London) but now I'm pretty certain this was a scam. Has anyone encountered similar problems?? What do I do next? File a dispute/claim with Paypal?

UGH I'm frustrated and unsure how to handle this since everything seemed to go smoothly . . .