MainStreamTrader - scammed a RS Account

Link to scammer's Sythe profile:
Briefly explain the trade: Was selling my RuneScape account, and afterword, the user did not pay me. They simply logged off of MSN.
How they scammed: Did not pay me.
Proof that you were not talking to an impostor: (See trade screenshots)
Trade screenshots:




Proof it was the real person (if you look at the MSN screenshots, I ask for the PM, and he provides them. Also, you can see his MSN Address in his signature + in the top of the MSN window match):

 

Banned, I'm really sorry for your loss. I hope you can recover the account.