Extremely disappointing experience with Makro

I placed an on-line order on 23 July - delivery was promised 25 July. Today - 31 July - there is no movement or delivery. I have spoken to their customer care people 3 times, with no result. Eventually was put through to the Germiston branch, as delivery would take place from there. Held on for 45 minutes, got through to a person who put me on hold, and then call was cut off. I need my order to be delivered now. I am not at home next week, if they eventually decide to deliver it then. And they won't take a change of address so that the order can be delivered to a location where there will be someone to accept it.