Poor Assistance from floor staff

I went to builder warehouse, Klerksdorp to buy paint whereby the person told there were non in stock. I told him to have a check on the system. The system showed 2x20L of paint is available, exactly what I was looking for. The sales person then told me that the system is not correct he has been to the store a couple of day ago, the paint I am looking for is not there. No alternative help to say he can order the paint or look at a another branch. Nothing. I left the store. I did not trust the help and rather see it as laziness.

My wife return the following day with the same demand and the 20L paint was available. This type of behavior is not good for business. I have found all there info on google and decided to phone the branch, what a disaster, the phone keeps on ringing, you listen to this computer nonsense all the time to my cell phone cost. I held the line for 10 minutes without success. Not good for business. Furthermore, if looking for something, you can wonder through the shelves looking for something, there is no one to assist you, to guide you to find what you are looking for. Not good for business.