There was that famous Amex case in the 80s where through some massive misunderstanding the restaurant (I think) got mixed up using the terminal and accidentally

There was that famous Amex case in the 80s where through some massive misunderstanding the restaurant (I think) got mixed up using the terminal and accidentally entered the long number for the amount. It being the early days of those terminals, the cardholder didn't notice and accepted it and Amex let it go through as it was one of their no limit cards. The overnight interest alone was astronomical. Fortunately Amex saw the PR value in being decent and refunded everything.