You can report the abuse to Network Solutions, their registrar. Operating a scam website is against their terms of service and the more individuals who report the website to them, the stronger case Network Solutions has to take action. This is not an individual dissatisfied customer but a pattern of wholesale theft.
The numbers on the front page "70.2 BTC withdrawn" is totally made up, just like the withdrawal procedure. In reality, there is 0 BTC withdrawn. "843 Users Registered" is also false.