MAKRO TO CANCEL THE ORDER AND REFUND MY MONEY BACK TO MY ACCOUNT

I paced an order for a product at Makro online with order no MAK721354 for R799. However within 7 hours I canceled it because I found the product elsewhere at at cheaper price. I placed this order Saturday at 1am and at 8am I canceled it . To my surprised ,I received an SMS indicating that the product is schedule for delivery. I am not happy .I want Makro to stop the delivery and just do the process of refund, because I ordered this on Saturday around 1am and 8am I cancel it immediately before even the shop open. It doesn't make sense to me to received a message for delivery while I cancelled this immediately after order. I expect Makro to contact the courier or whoever they need to contact to stop this. Makro is a big shop to behave like this. All I want is makro to cancel this and refund me my money