Bad service

Hi went today to Pick&Pay River Park Kuilsriver and bought items to the value of R32. I SWIPPED MY Canal Walk gift card and it showed declined. At the same time the cashier machine had problem. I left the items and went back home to check online the card statement and it showed that the R32 went off from the card. I then went back to the store to collect the items but the Front Supervisor said I can't get it because the amount will reverse back on the card. I showed her the statement on my phone and she was adamant that the money will reverse. I must wait 48 hours for the money to be reverse. I then asked her so if the money did not reverse after 48 hours then I must come back and dispute the matter all over again. I also told her so I must drive back 3 times to the store which is costing me petrol and who will compensate me for the petrol money as I already drove twice to the store. I said to her the petrol I'm spending cost me far more than the items I purchased. I then insisted to speak to a Manager which she called after 10 minutes. I explained the issue to the Manager who understood my querie and said it's fine they will sort me out now. She called the superviser and said she must sort me out, the supervisor inturn told the Manager that she van not as they had to wait for another person to authorise as she was not in store at that point in time and that I need to wait another 10 minutes. I said I can not wait as I had to pick up my child at school. Both Manager and Supervisor could not resolve my querie and I left the store with no items again. So pick & pay just took my money and gave me no products in return. That's day light *******. FOR SUCH A BIG STORE THEY CAN NOT assist to give me my items worth R32 which I paid for. They Manager and Supervisor are *********** in their job functions, they would rather inconvenience a customer for R32. So in closing I now in actual fact spend 10 times the money for the items I purchased which I did not received as well but they took my money. Please train your staff in customer service and train them on how to make Management decisions. This is unacceptable and I please want feedback on what action Pick&Pay will take to compensate me for my lost and against the staff involved.