KFC Broad Acres - Wrong order, suspect dealings.

KFC Broad Acres. Ordered three Nacho Cheese Burgers and one Crunch Burger, requesting that one burger has NO Nachos on. Ten minutes later we are unable to pay as the single burger option as advertised on their menu is not on system. Another ten minutes later we are informed that they can process our order IF we pay cash. Our order appears while the total is being calculated...all burgers with Nachos and no Crunch Burger. Pathetic service and curious as to why a cash sale was the only option?