Total unwillingness by Manicaa to refund client after his paid order was said to be out of stock and can't be delivered

I ordered goods worth R859 on-line from Manicaa on 3 Aug 2022. The goods were shown to be in stock so I paid for it (Order ID #***). However, on 8 Aug I was informed that the goods were out of stock and cannot be delivered. They blamed the mistake on the database for not being updated in terms of stock. However, they could refund me within 7 days of receiving my banking detail. I sent details and they acknowledged reception thereof, but had I to remind them of the outstanding refund on 31 Aug and again on 14 Oct , again on 23 Dec and again on 26 Feb 2023. They responded on 27 Dec saying that my request was escalated to finance for processing and payment. I would receive a PoP by email within 7 to 14 days. This didn't happen and 2 months down the line (26 Feb) the refund was still not paid. It has been 7 months since Manicaa first said I'll be refunded but I'm now at that point of being totally fed up with their empty promises and words.