Submit a ticket to support and request a refund. If what was purchased was not used/opened, they will be able to reverse it. If anything was used/opened, then you're stuck unless you go a route (refunding through Apple/Google) that would prevent you from making any purchases or using units until you paid them the money owed for the product received.
Translation
Improper purchase
I wanted to complain here that this morning at 4:24 AM a purchase occurred that I did not authorize and was not aware of, and R$49.90 was debited. I would like to know how we can resolve this, Kabam?
Go Corinthians!
Olá, será que você não clicou em algo por engano? Se sim, você não pode usar o item comprado. Senão, eles não podem desfazer a compra.
Vai Corinthians
Hi, could it be that you clicked on something by mistake? If so, you can't use the purchased item. Otherwise, they can't undo the purchase.
Go Corinthians
Thanks Kabam 🥳