Makro online order Cancellations and refund renders a very poor service

Makro online order Cancellations and refund renders a very poor service. There is ineffective internal communication. I cancelled my order a day after ordering instore and 3 days later the courier guy phoned saying they are here to deliver... I made them aware that i had cancelled the order and they went back with the items. I have been following up with the call center since the16/02/2025 and to date 26/03/2025 I haven't been refunded. Instead I was told that the order is marked as delivered. I really can't do anything on my side. Another mind blowing factor is that I was told by one of the agents at Makro Online that until the seller ( Premier Mart) logs on their internal system that the items were returned to the store I wont be getting the refund.