We reported it immediately and the answer was 'oh, yeah, they get real possessive of the machines.' No apologies, no reprimand of the customer who could pull this many times a day.
She used the F word several times in her tirade and my husband is a patient and quiet man so he let her berate him and we left the machines but he did NOT pay her whatever was left of the money he put into the machine. The slots don't pay and we were part of a scam by a person claiming she had left her card in HER machine - this happened 20 min.
We have found that those who rave about places to eat don't have home cooked meals very often. and the price was way too high for the quality. The service was almost non-existent if you wanted coffee, another drink, etc. So many friends had recommended the buffet here that we had to try it.