Handling of customer bank card

My husband went to do shoping at Checkers Davenport. Upon going to the cashier to pay, she took his visa card and kept looking at it. When he asked what was the matter she said she had never seen a card like that. When hen asked her to give him back his card, she refused and said she would call the manager, when the manager came he said the cashier had the right to look to hold on to a customer's bank card. I just think it is totally wrong especially with the rate of ***** on increase. This is their contact number: ********** 450