Card Machines dont work

Im a frequent patron to clicks in Silverton. In the pass 3 weeks i visited the store 3 times and each time when i went to pay the swiping facilties dont work. Upon questioning the cashier they said its my card thats faulty and all the visa cards give problems. I told the cashier its not my card because i dont have a problem anywhere else. She insisted the machines work fine and i must get cash to pay. Its absolutely ridiculous that the card facilities havent been sorted in over 3 weeks and to think they are aware that the visa cards are problematic so why not solve the issue. It is a great inconvenience.