First of all, they can sometimes take a while to pay out, the longest i have heard is 3 weeks but i have been told it could be as many as 5/6 weeks. hopefully you will receive it all in good time and can go on to spend your hard earned money.
Secondly, why would anyone join a forum and then abuse people? It isn't like you can post without being a member, so why take the time to register then abuse?
You obviously won that money as you can't get a $1000 free bankroll, so, well done mate, i hope you do even better in the future, and hope you receive it all. As Bobsay said, keep a full document history of any transactions you make, as at the end of the day, if it doesn't pay out, then it is theft. Good luck again and i hope you get you money soon.