2 days at makro out of stock for 2 difderent items

on the 17.08.2015, went to makro to purchase inflatables which they advertised and i checked the website they had stock, got to the store and no stock, then i browsed around found a Tv on special inquired and told the salesmen i will be back tommorow, got to the store on the 19.08.2015, guess what no stock, why do they have the it advertised, why didnt the salesman indicate this, makro is waste of time.