Courier has no clue of details of parcel!!!

I have been calling Dawn Wing numerous times from the 3rd of December 2015 until today 8th of December 2015.<br> <br> This courier is absolutely useless with their customer service, as they have no idea where my parcel is (that is in the warehouse, at the depot or in transit). They advise they will call you back, but never do so - I called them more, and they still have no clue. It seems they have lost an expensive delivery, and I have already written to the retailer CNA/Edcon.<br> <br> I have purchased from Amazon, Spree, Takealot and other sites - and when my orders are delivered by DHL, RAM, Fedex, Fastway, Timefreight I have no issues. I don't understand how Dawn Wing is a leading organisation, as they don't know whats going on with this simple order.