-snip
sure, they are somewhat liable for not permanently closing your account and I think(entirely my opionion) compensation of some kind should be granted to you but asking for the money you deposited because they breached their own policy is not gonna happen.
you are addicted. If you ask me, the best thing you can do is let it go and seek help. if you keep going it'll just get worse and worse until you hit rock bottom.
AFAIK, Stake doesn't confiscate the winnings and deposit amount unless you seriously absued the promotion with tricky methods. This is not acceptable but Stake puts account on withdraw only mode that user can take out all deposits to original deposit address.