Makro 15kg activ dualwash... sold out

Hi. I really saved for a long time to buy a washing machine. Finally it came on special for R4699 the Samsung 15kg activ dualwash. I added it to my cart and there was no problem at all saying low stock or anything just before my payment it just cancels my whole cart saying no stock . I called the customer care and they told me to contact centurion store as they have stock. I called them they in turn told me wonderboom has stock of 4 left i called them they say they don't have stock. I tried changing to different stores online and see they all are now saying no stock and finally came accross the Springfield and it says low stock , again I add to my cart and just before payment it says no stock. I contacted them and they say we have 2 left and then they go and check and see they don't have stock . This is unacceptable . Why advertise when you don't have sufficient... I asked for a rain check as I really really wanted the item.... but they said they are unable to give me one. the promotion is until the 5th August. I am really upset. As I needed it urgently and I just had enough to buy it.