Unqualified, inefficient staff - online order waste of time!

Made an online purchase of a headboard, showed two in stock. Received a call from Builders Warehouse Centurion yesterday morning to let me know they will deliver today (Saturday morning) before 12pm. That time came and went. I tried calling them several times, nobody answered. Eventually called the toll-free number. The very helpful lady there also tried calling them without success. She called me back to say she had spoken to them and they were on their way to me at that time. Three hours later and they still had not arrived so I called Centurion again and this time they actually answered, and I spoke to a number of people, to eventually get told the gentleman got it wrong yesterday, he didn't check and they don't have any in stoc****!! Spoke to the manager who verified they don't have stock and that they will have to get it from another branch. Why do companies employ people who DON'T KNOW HOW TO DO THEIR JOBS???? I have wasted a whole morning waiting, missed an appointment, and I had to phone THEM to get told that the delivery will not be coming. Used them twice now, and both times have been an issue, so no more Builders Warehouse for me!! Will spend my money elsewhere in future. I have all the names of the staff I spoke to and have passed them on to the manager who will hopefully do something about it, and perhaps provide proper training!