Pathetic Service to a Long Time Loyal Client

I purchased a Built in wall braai which was delivered with no hassles from Builders Warehouse Strubensvalley. On Monday I went in again to purchase all the building material and the ***l. Delivery was scheduled for yesterday. When I got home last night I noticed that the bricks were not the ones purchased. Also the ***l had scratches on it. I called Builders last night at about 17h30 and spoke to someone (the name is known to me) who promised to have the Despatch Manager call. No one called. This morning after multiple calls to the Call Centre I managed to speak to a Manager. After several follow ups with five different Call Centre agents, the Manager informed me that the wrong bricks were delivered. This required a lot of persuasion including emailing of photos of the bricks. I was then told that the correct bricks and a new ***l will be delivered soon. After a few hours I was told that they dont have the bricks in store. It is 16h15 and still no word from Builders - I have the Building Contractor and the Electrician coming tomorrow and I have to pay them for no work done. I am not sure what I have done to Builders to be deserved to be treated like this. I waisted time , money and effort and whole lot of frustration.