Online order

I bought items online from Makro. According to their website it would take 2-5 days for the order to be delivered. After numerous phone calls to the call center I was told that they are packing my order on 28 Nov 2017 and i just called again and the lady informed me that there's one item that's out of stock, is there no intelligence built in your inventory system that can book an item out and prevent the store from selling this item? Also according to the agent i spoke to, the store(Montague Gardens in this case) had to contact me with feedback. Makro please deliver my goods asap.