It is the willingness of the Bitvest casino if they will send a full refund to this OP but as we see they don't because that is very risky on their part.
Not exactly true to be honest. It's not a fucking job which requires you hours to recover. It doesn't take more than half an hpour if someone is less expert while on the other hand it should take few minutes to recover if you are a pro. I believe any team working for bitvest are a pro on this isusue. SO, since you have access to the fund, why not refund it? It's weird that Bitvest team ios taking such a lot of time to recover the fund. After all, it's their customer's fund.
Do you know what is mean by rule? Lets see the rule of Bitvest related to this situation as quoted below:
Send your Bitcoin to the address below, your funds will be spendable after one confirmation.
Important: Any coins sent to this address other than Bitcoin cannot be recovered!
Players are already notified/warned, if there is a mistake from the player then Bitvest has no responsibility to recover and refund the money sent to the wrong chain.
The same may happen in withdrawal where most casinos asks players to double check the address before clicking the withdraw button.
Lets say someone put a wrong address while making withdrawal, will you force the casino to make refund too because of player's fault?
My main point is, player may ask for a refund although there is a rule as quoted above but players cant force the casino to do it.