The problem was exactly described by @BitcoinHunt3r. Everything indicates that OP has created an account to claim reload bonus. He tried to withdraw it, or maybe he even managed to withdraw it. The bonus is for users who are actively betting. It seems OP was not enough active in betting to deserve a withdraw of that bonus.
That could possibly be the case of OP as well, only he did mentioned that he is an active user at stake.com. I just hope that OP could really attach here the official message or notice sent to him, so we could help him out figure out what really happened in his case, based on the received notification.