What is the official policy on rip-offs?

[wacki]

A PM I got today from michelz:

hello sir,

i got ripped of by j4lvlie. The deal was 224 on AP what i will send him and he will send me 205 on Stars, this was yesterday, the transfer was accepted by AP 3 hours later, he was already off by then. Now i saw him twice online this day and i sended him several messages wich he wont replyd.

Can u help me in some kind of way?

I told him a public warning in BBV might be the best route. I know there was a thread on this stuff before but when I searched for "ripped" in mod forum I got nothin. So I'm not sure what the official policy is. I sent j4lvlie a PM asking for a response.