iPhone trade in was sent as gift card not as credit to my Apple Card as promised

I ordered and received my new iPhone 15 Pro Max and returned my iPhone 12 Pro Max in the trade in packaging as required. The trade in documentation says that the value of the trade in would be credited to my original payment method, which was an Apple Card credit card account, upon receipt. However, I received emails this morning that I had been issued an Apple Gift Card in the amount of the trade in.

The email says the Gift Card was emailed to me, but I didn't actually get the gift card email. I received two separate emails, one at 7:07am saying that they were processing my order for a gift card and lists me and my email as both the From and To addresses. Then a second email at 7:17am saying that my gift card has been sent and I should check with the recipient to make sure they received it. I am the recipient, and did not receive it.

When I log in to my order history, this order does not appear. I am just trying to understand what is happening with my trade in credit and where this money has gone/been sent.

I have no need for a $450+ Apple Gift Card, but I do need that to be credited to my Apple Card credit card as it was supposed to be in the first place.

The trade in was shipped back to them well within the required 14 day window, although Fedex Ground did take their sweet time delivering it. Is this normal for the Trade In process? I have done it in the past and it did not work like this.