Originally Posted by kpbadger

There were pre-pandemic reports of this happening that were posted here from time to time. Smile, it’s a gift from Delta (which we all know is really a marketing/retention ploy behind the scenes).

In those cases, from the best of my recollection of the threads, people wrote or called in and Delta un-did the unwanted upgrade. (I’d suggest calling during regular M-F business hours so the skymiles desk is open.)