The only way for you to be refunded after either being scammed of meebles or items, is if you possess sufficient evidence of the "Scam".
This method requires an additional free software on Windows called "Fraps". On Mac, you can simply use QuickTime Player.
1. Open the corresponding software depending on your OS.
2. Configure Fraps to suit your preferences and configure the "Movies" special key. Then, press the button while in-game. On Mac, simply do "New Screen Recording."
3. Carry out the deal as originally planned.
If you get scammed then do the following.
1. In QuickTime Player, stop the recording and save it somewhere on your computer. If you are using Fraps. Press the "special key" again and open the "Movies" folder.
2. Upload the video to Youtube.
3. Create a new thread, and embed the video in the thread.
Hopefully, this would resolve all of your issues of being scammed! Have a nice day!