sometimes banks charge an account twice just to make sure you have enough money in your card to buy the game! ( kinda like a security precaution) The charge will say temp or authorization and then the transaction will disappear after 1 to 3 days!
But that’s only if you bought the game directly with your credit or debit card and it doesn’t happen on every transaction. If you didn’t use credit/debit, then it might just be a glitch in the system!
It’s a little confusing to explain, I apologize! I wish I could explain it even further but even I don’t completely understand it. It happened to me a couple of times with my bank and they were no help.