UNACCEPTABLE MAKRO ONLINE SERVICE

I purchased some garden chairs on 12/12/2019 from Makro online. Later that day, I realized that the quantities purchased were incorrect, I then call Macro care on 13/12/2019 at 08h30. I spoke to a call cetre agent who kept me online whilst processing my order cancellation. The lady assured me that the order has been cancelled. I got a surprise of my life when I received notification of order dispatched on 20/12/2019. I immediately informed Macro care that the order was cancelled but I was advised to refuse delivery when it arrives. on 31 /12/2019, I received communication confirming that a request has been sent in for order cancellation and refund. Order MAK*** has still not been refunded and Makro care has requested proof of payment and banking details twice already. I find this unprofessional and unacceptable for this to have carried on this long.