Really bad sevice

Today i went to go buy an airfryer 8ltr Goldair that was on promotion and wanted to buy 2 . Before i went ,i took the liberty to call first and find out if they had stock and my answer was yes. Drove all my way to the store and I was informed by the people on the floor from that department that they never received stock and they wanted to shove the 5ltr on me which is even more expensive than the 8ltr. Wanting yo do this is to keep the stock back and selli g the 5ltrs first which i found on a few places on the floor. Guys please get yoir house in order . I am very dissapointed with spending petrol etc when you have no stocks.