Makro Third Party Online Orders are a Disgrace

I bought an item online from Makro on April 4. Almost immediately after I made payment I realised I ordered the wrong item. The payment had already gone through and of course Makro does not have an option to cancel an order online so I had to call to cancel the following day April 5. When nothing happened on my account, the item still showed, in progress by April 7, I called again to cancel. I was told it was being escalated. On April 9, when I received the delivery of the wrong item from the third party, I tried to refuse it but they insisted I take item, then request a return, which I did. They collected the item a week later around 16 April. My account online still shows the return is in progress. I have called Makro numerous times only to be told I have to wait 7 - 14 days for my refund. 7 - 14 days after which date? The day I cancelled or the day I returned the item. How long does it take to refund a cancelled order, ?