They are running a scam!

They are running a scam!
Went to the concert on 7/14/18, my husband decided to get a drink, so he ordered a drink ($19), he paid with the credit card and casher said it did not go through , because they are having a problem with computers, so she asked for cash, another $19, and of course she couldn't give me a receipt for the same reason ( problems with the computer.
Well, a couple of days later, I checked my credit card, and in fact they did charged my card!
So I called credit card co and put a stop payment on it. Well , because, I did not have a cash receipt they could not refund me my money. So my husband paid $38 for one drink! and the casher makes hundreds in cash every day!!!!