Ok let me get it straight.
1. the account that supposedly the OP lost has no funds in it
2. the only one left in the account is probably the perks, like the rewards and free spins
So that's why the support tells him to open a new account. But not sure if they can transfer all of that to the new account though.
The OP is back to square one.

But from what he said, he has funds in it and he was trying to retrieve the account but the casino site refused him to do that. And If it is only the reward that is in the account wallet then the OP should let it go. They would never transfer those bonuses to his new account. Because the new account will come with it's bonuses. But the support team would have made it clear for him to understand. And now this made the guy to create a thread for them. Communication is one of the major aspect in human relations.
^Definitely right, and why does the casino staff reply after 24 hours or the next day which is a very frustrating situation?
As a casino, it is very important on how convenient to reach support when you have an issue.
However OP just accepts the fact that you are losing that account and forgot about the bonuses and Rakeback, you can create a new account and wager again. If you have funds left just ask them to let your transfer into the new account so that you can wager again because you have the right in your fund left but if you only after the bonuses and Rakeback, that is the casino's right.