YUM YUM PEANUT BUTTER BIG DEAL

I visited the New Market store this morning to go for the 1kg YUM YUM peanut butter that is advertised in their leaflet for R41.95 per item. Got to the shelve, NO STOCK and the packers tells me the special is over but yet the leaflet shows the "BIG DEAL" is running from Monday 10/07/2023 to Sunday 16/07/2023. And in their small print is says that they will have enough stock. Is this false advertising?????