No delivery - missing order that's already paid for

I bought tiles at Builders Fourways which were meant to be delivered on the 4th of June. In the afternoon of the 4th, I called to enquire about the delivery as by 3pm it had not been done. I was assured someone would call me back. No one called me back and no delivery was made. On the 5th of June I called again and was told the delivery would be done that day, when I enquired when as I have people waiting for them no one could tell me. At 1pm I called again to find out the status and after being on hold for 20 minutes the call was cut off. I called back and eventually spoke to a manager at 1:30 to be told she would get me all the details as to where my order is, why it wasn't delivered the previous day and why no one notified me. That was over an hour ago and yet again no response. I am currently on hold for 15 minutes waiting for someone to answer at Builders. This is the usual scenario when calling Builders, there is at least a 10 minute before anyone bothers to answer the call. So my contractors are delayed, I have no idea where my order is and Builders is not bothered to let me know when it will arrive or even call back. Best to shop anywhere else but Builders Warehouse, worst experience ever, unaccountable staff. Will they pay for the delays? Will they pay for the hours spent calling them?