Combo special disapointment

Am so bored with ShopRite in Newtown there is a special they running its a combo 5kg spekko rice,5 kg white star maize meal and 5 kg sasko wheat flour. Since last week I have been going there to but the combo but it seems like they don't have the flour. Everyday its the same story. I don't understand why they still advertising it if they don't have full stock. This is misleading and tiring doing up and downs for nothing. Please review these specials before advertising them this is annoying.