Dishonest staff giving me the run around.

I bought a Defy 17kg washing machine last week Friday at trade route mall Game and was told it would be delivered in 3days including weekend and public holiday, The machine is not yet delivered and yesterday I decided to go back to enquire about it. I was told it would be delivered the same day which was yesterday and till today it has not be delivered. I don't understand why can't they just be honest cause now they are inconveniencing me because I have to make provision for someone to be available at home and yet they don't show up. If game can't fulfill what they promised, then they should give me my money back cause they even confirmed that the machine is in the store and doesn't have to be delivered from the warehouse.