PnP Poor customer service delivery on Promotion items !!!

Being a Executive of a big company and believing in service level delivery to customers as the ultimate goal , I am absolutely disappointed in the service delivery of Pick n Pay in the general. With the last birthday special run of PnP ending 4th of Aug , I have spend time in three of their northern suburb stores( On Darwin, Glengary & Cape Gate Mall) from the 29th of July up to the 4th of Aug every day looking for 4 items that was on promotion. Could not get any as the excuse was on every occasion that they are out of stock and are waiting for stock. Yesterday the 6th of Aug after these promotions were over , I did another round at the stores and can you believe it all 4 items fully stocked at all three stores at normal price !!!! This makes me believe as an Executive of a big company that PnP promotions is a big **** , ******** people to get feet through the door and not actually trying to uphold promotions and most of all not even trying to keep customers happy. In my books poor customer service delivery but they are pushing their clients that delivers to them on a 95% service delivery. Its ridiculous to expect companies to deliver to you at a 95% level but PnP to their customers with a 0% service delivery !!!!!