Tile Africa Southgate

I have paid for 12 boxes of tile from Tile Africa. When we went to pick up the 12 boxes we were advised that they only have 9 boxes and the other 3 will arrive by the next in the week.During the next week upon numerous phones call we were advised on Friday by Saturday morning the rest of the stock will arrive.Taking the salesman word for it.The tilers had arrived to do the job then still the Saturday they told us that by lunch the stock would be there. If the salesman was aware that he did not have enough stock to cover my order he should have advised us in the begining instead he kept on saying the stock is coming.Now that there is in a branch out of Jhb i was told that i need to cover the courier costs.I think this is terrible customer service.