Totally not satisfied with how online orders are handled

So I ordered a washing machine online on the 22nd of November from makro. The status of the machine on the day reflected "in stock-woodmead branch" and delivery/collection was supposed to be made in 3-5 days as per their policy. To date, I haven't received my machine. When I called the store, all they said (after the 100th call) was "sorry for the inconvenience. These machines are out of stock". Like HOW? were they not in stock when I ordered and paid for it? Couldn't they've notified me emmidiately that it will take a decade for me to get my machine?

I'm so so disappointed & would not recommend anyone to use their online facilities.