Frustrating dealing with customer service

Placed an order on 7 May. Would have liked the next day delivery that Takealot advertise but the option wasnt available on this item as according to the call centre the item is too heavy. Was then notified that the order would be delivered Monday. On calling Mr Delivery Tuesday I was told that they tried to deliver late on Monday. Obviously I wasnt available as its a work address. I asked that the order be delivered before midday Tuesday as I wont be available after that. The agent said she'd make a note of that. Not sure why they cant contact the couriers to arrange. Item wasnt received and I havent heard from the couriers. After receiving what looked like a standard reply from Victoria Pieterse on Monday evening I have sent two emails today neither of which have been responded to. Simply put I would like the delivery before 1pm on Wednesday 13 May or I'd like a refund as Ill buy this item elsewhere. As a regular customer of Takealot this isnt the superb service I have become used to.