Sorry to hear this happened to you. But i do not think they will refund cash after you already spent it. I mean lets say you hit for several $1000s . Then the book turned around and gave you back your $1000 but kept the rest saying "Oh,you requested us to close your account before you won the cash so we are doing that now". I think every single person would be against the book then .
I know how you feel -i have the feeling you may have had some really tough losses. I know how that feels. Lately i have had horrible tough TOUGH losses. The worst was a $100 bet i took all the way up to Over $5000 and lost it all by 1 damn basket. The difference between 0 and $10000 .