Builders leaving me holding the can after they failed to deliver

I ordered and paid for materials and arranged for it to be delivered on Wednesday 26 August. I got confirmation from Chante, from Constantiaberg, that the materials would be delivered in the morning, after telling her that I have a Telehandler on site, to carry the materials to the 8th floor. I made this implicitly clear. 12:00 comes and goes. I call the branch only to be told that it is on its way. 14:00 comes and goes. Eventually I call the branch and speak to Lance, who tells me that he is the branch manager. I tell him the story and he says that he will get back to me immediately. I also request his direct mobile number, which he gives me. This is now 16:30 and still no materials. I try and call lance on the number supp****, which is now off. I then spoke to Collin, who is the dispatch Manager and tell him the whole story. The machine was then kept for another day at a cost of R19569.71, as i have no other choice. I have spoken to Yasien, the head of the complaints department and now another guy from Masmart, only to be told that they will not cover the cost of the machine. Their contract states that they only cover deklivery to the curb, which is exactly what i wanted, on the correct day. Masmarts reply is that they will refund me the delivery charge of R360.