First of all this is part of Silver Oak Casino's scheme. This is what they do, they debit a customer’s account, and then when players win they refund the deposits back into the players account so that they don't have to pay the players by claiming that they never collected any money from their players.
They can do this on certain credit cards, and debit cards but not all. I am getting all the paper work from my bank and I will gladly post it on here for the world to see how crooked this casino operates its business online.
Also if a player wins fair and square that is the casino's problem if they don't like that, pay out what you owe customers! It's your error to begin with, and don't try to manipulate the public by depositing the money back into customers accounts.