I was able to upgrade, through Apple, this morning. I did have to pay in full though, as opposed to going with the AT&T payment plan. That was fine. I didn't want to get stuck having to pay off the returned iPhone 12 first, which is what ATT.com was showing me. I was too busy yesterday afternoon evening to go back and verify, so by the time I figured out the refund hadn't been processed, it was too late to call.
All good though. Got at Nov. 13th delivery date.
All good though. Got at Nov. 13th delivery date.