Frustrating stock antics

Same frustrating story, this week PnP advertizes a special on HTH chlorine, guess what there is no stock on the shelf from the day thr special was advertised. PnP Bronkhorstspruit regularly have this issue something is advertised on special, they dont have stock. I have also hello petered them for this same issue around a year ago. Old habbirs die hard. Went to PnP in Fearie Glen since I urgently need chlorine and I was in the city today. Guess what they have loads of stock.