characters.net SCAM... stole my eve online character. no payment or any response. Internet

I sold my 5 year old eve online character to characters.net  I was offered $556.  They changed my account information right away and I have not heard from them since.  no payment, no receipt, no confirmation, nothing. all attempts toward them have failed.  I thought I was good when I read 15 of the 500 reveiws on their site.  all were satisfactery results other than having to wait a long time.   It wasnt untill after I sold my account that I really checked into them and noticed that all the comments in the reveiws were the same 15 guys just mixed up all over to look like 500 different reveiws.  I knew I was scammed...   I posted a comment to them and it asks for a refference number.  I didnt get one of course so I entered 123 and it worked.   my message was one of anger and frustration.   I know that it just went no where and nobody was going to get back to me.  These guys are ripp off artists.. dont deal with them..  I wish nothing but bad luck to you people involved in preying on people.