HOW CAN I GET A REFUND ON MY IPHONE PURCHASE?

II recently bought an iPhone 13. I put my card in and made the purchase. Minutes later I received an email saying that there was a problem with the payment. The mail said that it is better that I use another card to complete the purchase and receive the product. But the problem is that they had already charged me $40 to the first card. I placed the other card to get the product. The problem is that on that card they also charged me the $40 dollars. How can I get that money back?