Bad service

Hi SUCH BAD SERVICE,I am not happy with the service I received yesterday at Newcastle Amajuba mall I was treated very badly by your staff members. I used the QR payment to pay for my goods,the payment was successful since it went out of my account but the slip didn’t print,they made me pay for my Goods twice when the problem was the system. Nhlanhla the Assistant at that store was very rude,he was shouting at me saying they don’t have magic powers to get the money in the store, everyone at the store was looking at me as if I was refusing to pay. Is this how the store treats customers even when it’s a system problem. They told me I can’t take my goods because the slip didn’t print and they will lose their jobs so now must we lose money for your systems.