Booked a cheap (~$70) SpringHill Suites by Marriott while on road trip 2 months ago. Got an email from the area GM that due to Covid, they had to move us to a Courtyard by Marriott down the block.
I responded that night (didn't see the email until I pulled up to hotel late night) that I was very disappointed to not be getting the Suite that I paid for, so the GM offered me 10k Bonvoy which I accepted. Fast forward to now, the points still hadn't come through, so I emailed to followup.
Apparently he by mistake put in an extra 0, which the system flagged and wouldn't process.
So he had it updated to 20k and pushed it through