help?

I'm new to this site, and I'm not sure how to use proof to report a scammer. Yesterday, I was trading with someone called Ryza and i did it through Pm. They told me they could sell me an UC neopet for 100 dollars. They wanted giftcards, so i went out and bought some giftcards for them. They had some vouces, so i went first with them and they told me the giftcards did not work. I called the store and they told me the giftcards were allready spent. I messaged the person back and they have been ignoring me and wont give me my neopet. But, they used all my giftcards. I tried to report it to sythe on the report a scammer forum, but they said i needed proof and locked my tread.I dont know how to do this, and i really dont feel like getting the police involved, but if i have to i will. can somebody pm me and help me out? It would be VERY appreciated.

 

Read this- http://www.sythe.org/showthread.php?t=1109411

 

Take pictures of all the PMs. At least you should be able to get him a TwC

And next time don't go first to people with "some vouches".