Actually, it happens all the time, and they legally can't leave the credit on their books for too long. I think it is 90 days maximum in most states.
I can't wait for crypto-payments to be found as often as CC machines.
Crypto's better for you, better for the vendor.
You know exactly how much you gave, and they know exactly how much they got.
CC companies are in the business of making money out of thin air. Every charge you make comes out of nowhere. So, having a credit is a death to CC companies.