Jo Jo a No No at Builders

Around the 8th Nov. , I visited the Shelly Beach branch of Builders Express to order a 2200 litre Pump Ready Jo Jo tank with a pump and connector kit. I was assisted by a lady called Tracy. She explained that due to this not being a stock item, there would be anything up to two weeks delay. I accepted this and placed the order with her. On Wednesday 22nd Nov. I again returned to the store having heard nothing from them. Again I spoke to Tracy but this time I could not find her and spoke to heron their internal phone system. I explained that two weeks were already up and being a Wednesday and in anticipation of the promised delivery I would like to pay for the goods and take advantage of the pensioner's 10% discount. Tracy became a bit cagey at the mention of discount and said there probably would not be 10% in this case, but don't pay now, wait until I contact you when the goods arrive, but it could still be up to two weeks. Yesterday, Wednesday 6th Dec., I again went back to see Tracy, having again heard nothing. She was at the customer counter and recognised me, but was in fairness busy. She eventually said to me that she was sorry but it appeared that it could still be up to two weeks before the goods arrive. At that point I told her to cancel the order and left the store. My complaint is one of total lack of contact and understanding. I would have accepted two months delay if that had been the initial response. I'm not in a major hurry. However, there was not the slightest effort to keep me informed by phone and I had to travel the 12km to the store to find out what was happening each time. Additionally, the mention of a discount which they promote on line (there is no mention of it in their store)throws everybody off. Why have a discount that you don't promote within the store for all to see and then start to stammer when a customer requests it?