Worst customer service experience EVER!!

My husband and I went on Saturday 7 December to Ackermans East Rand mall. I have never ever experienced this service ever in my before. We stood for over an hour in the queue. Eventually when we got to the front, the cashier scanned our stuff. When we wanted to pay there was a problem with that speedpoint and that it didn’t accepted the card that we were paying with. So he said we had to pay at a different speedpoint. The cashier then walked away. Not advising any other of the cashiers that they had to help us. We waited for 20 minutes. In that time the cashier passed us about three times walking up and down. Keeping in mind this is a Saturday and all the people were doing Christmas shopping. The cashiers working there doesn’t seem to care about anyone and they literally took their time with each customer. All the people in the queue started complaining. I couldn’t hear what they were talking as they were speaking Zulu I think?! After 20 minutes they guy left us at another till we asked him what was happening. He called a supervisor and the supervisor took us to the other side of store with more tills. Waited another twenty minutes still confused and not knowing whats going on as we don’t understand their language. I asked the supervisor what was going on and she said we had to wait as the cashier that can help us is on lunch.... REALLY?!?!?!??! I asked her if we could just pay for the bag of stuff on a mobile speedpoint (I know almost 99% of stores have extra speedpoints) and her reply was no. We just have to wait until the cashier is back from her lunch. I was soo upset I left the package and told the supervisor to just leave everything. We left the store empty handed. I honestly have no word to even explain this experience. I will not set foot in that store again and I know word of mouth is better than any review.