Don't treat it as lost yet. Have you tried to contact them? What was the response from support?
No casino that wants to establish presence through a forum will simply steal your money or it's going to work against all they're trying to do here.
Try again and again, don't over do it, like try to withdraw tomorrow and then give it a day and try again. If nothing works day after day, contact support and give them a few days to work it out.

If next week you still won't have the money start a scam accusation with all the screenshots from your failed attempts and responses of their support and we will back you up in this.