Dissatifaction with MTN

Why is it that MTN advertises for products in their brochures and then when you go to the store you are told we dont have stock and even better when you phone around to the other MTN stores you are told the same thing. This hasnt happened once or twice to me and I am just wondering if others have had this experience. In their July 2021 brochure they advertise for the Samsung Galaxy Tab A 8" and none of their stores have it.