Frustrating card machines done work

I am so frustrated with Truworths Canel Walk and VA waterfront stores. I have visited both stores and experienced the same issue. The card machines do not accept my bank card this is what the woman behind the counter said and she said that they have told head office. I can not understand how they expect me to pay my account when their machines do not work. It is strange because I am with standard bank and the machine is standard bank. I think it is terrible and should be sorted immediately because it is not good for your company over all. I pay my account at tygervalley with out an issue. I should be able to pay with my card at every shop. I hope this reaches the right person and it gets sorted out. And I must say the staff seem indifferent and more irritated with me! I do not find this acceptable and if it does not change I will finish paying and just close my account because I am pressured to find time to make payment at alternative shops out of my way.