Pick n Pay - Poor service

This is the third time that Pick n pay has got a special on Castle lager and when we go to purchase the item we are told that it is out off stock. This is not the first time this has happened. When you ask management what is happening they blame suppliers for not delivering. Have spoken to Pick n pay in Mooi river and Ladysmith and the had lots off stock. Why do you have specials if suppliers can’t deliver.