With out checking "We dont have stock" is the normal reply - 30mins later stock was found

I went online on BW website and searched for a Wall Detector, i came across the Ryobi WWD-100 (700890), I called the store, confirmed 2 in stock. Online, same story, So i went after confirming stock at 2 sources. When I got to Builders, there was no stock on the shelf, so I asked the person working there, he told me there is no stock. So I asked if he can go check in the receiving area. He left and came back after 20 mins, telling me there is no stock, so then asked him to give me one of the other units the price advertised as per website. He said he can not do that, so I told him to go call the manager, another 15 mins passes. Manager comes and was very helpful, I told him about the stock showing available and I will report this to the ARB if this is not resolved. He said he will go look at receiving personally and we can talk about an outcome if he can not find a unit. He came back 5 mins later with the unit in his hand and I thanked him for his assistance. WHY DOES A CUSTOMER HAVE TO FIGHT WITH STAFF JUST TO BUY SOMETHING???? Leetoy Merlin is just a block down from Builders Boksburg....... You really need to jack up your staff....