Refund Issue

I called the East Rand branch of Citroen/Peugeot looking for a quote for a Peugeot 206. I was given an estimate on the phone. I then came to the dealership to place my order. I had the VIN of the car. Tinyiko the parts sales person punched the VIN into his computer, located the part I needed on the parts diagram and I paid for it by card. I was given an ETA of 3 business days. It was on a Saturday. On the following Wednesday I asked if my part had arrived and I was informed there'd been some hiccups and would arrive soon. A week went by and still nothing. After 2 weeks Tinyiko informed me that he had a part that wasn't exactly what I'd ordered amd asked me to look at a picture he sent me to see if it would work. I had look amd the part was different. He said he'd organize the correct part. A few weeks later I inquired again and he told me I would be refunded the money paid for the part. 2 weeks later he calls me amd says I must send my banking details together with some personal identification. I send him a picture of my smart ID and bank card and he confirmed that the two were what they required. This was done on the 26th of March 2024. I have still not received my refund. I have followed up with Tinyiko 2 times already and just reads my messages and doesn't reply to them. Please assist me get my refund ASAP. I do have the receipt for the amount paid.