R500 refund still due after 2 weeks - disgusting service

June 2019 I bought a K-way jacket from Cape Union for R500. When I went to pay, the amount went through on my side straight away and I received notification from my bank to confirm the payment went through. However, the teller argued with me and would not let me leave the store without paying a second time. Her reasoning was that it did not reflect on her system. She said to me that the bank will reverse my payment within 24 hours and so I HAD to pay AGAIN! Which I did, she then said if it does not reverse by that time I will need to come back to the store. Two days later, the amount still had not reversed, so I had to go all the way back to the store and let them know. When I got there, the staff suddenly had no recollection of myself or what had happened and were quite rude as well. I was told I will have to come back again as they couldn't help me for some unknown reason. Once again I went all the way back there, to be greeted by rude staff AGAIN and made to wait 10 minutes for someone to tell me that the money did in fact go through and they will be refunding me in 5 days time. No one even bothered to ask for my name, let alone my contact details. Its been almost 3 weeks and I still have not received a cent. I went back into the store again yesterday and was told that someone was dealing with it but I will have to follow up again at 3pm the next day. After following up again, THE SAME F*CKING STORY HAS BEEN GIVEN TO ME! ITS STILL BEING PROCESSED/SOMEONE IS DEALING WITH IT. How long does it take to refund a client?! This is absolutely disgusting treatment of a customer!