Makro- will not refund my money from an order they cancelled

Makro has had R8500 of mine since the 30 August, coming up on 2.5 months now. Despite numerous attempts they don't seem to be willing to refund me for an order they cancelled.

30 August: place an order with Makro, delivery noted within 5 days 30 August: phone call to let me know the standing desk would only be delivered the following week 13 September: sent a query, advised that the desk would only be available in November, I said fine 29 September: was advised that stock would only be in February 2022 Cancelled order 11 October: ordered directly from Makro's supplier, received the standing desk (which apparently was in stock) on the 20 October

25 October: phoned Makro to ask about when refund would be processed. Was told next week. 02 November: phoned Makro to ask about refund, was told public holiday delayed everything and would be processed that week. 08 November, phoned Makro to ask about refund, and was told to contact RCS- I didn't even know who they were, bought the desk on my bank debit card.