I am never buying online from Makro again!

I ordered a textbook from Makro on 14 August, it was supposed to be delivered by 19 August. When my order didn't I arrive, I called their customer service on 20 August. They then informed me that due to supplier issues my order had been canceled and that a refund had been instituted. They send an email saying I would get my refund in 3-5 days. Today is the 8th of September and I still didn't get my refund. I have called their customer care multiple times and all they can do is escalate the matter. Something needs to happen, a business like Makro shouldn't be operating in SA. Why do we have to struggle like this to get our refunds? The worst part is, this is a refund on an order that they canceled.