Well OP listed an improper scam accusation without a single proof.He only mentioned it how it went through .If it happened as you said then i fear that your computer might be infected with keylogger or maybe you put your username and passord in phising page prior to this  incident.

Or,maybe you withdrawed to your own wallet.Also rollin is there for a long time without a single true scam accusation and also players with high bankroll play up there and none of them had that problem like yours.

However whatever happened you cannot change,but you can take up measures to not to let it happen again by

(A)Setting up a new password.
(B)Switch off the secret URL from profile by which anyone can login to your account without a username and password.
(C) Set up an email address and emergency Bitcoin withdrawal address.