Service from David Jones is not even worth a star ...

Service from David Jones is not even worth a star from my recent experience. Ordered online a pair of sales boost when the offer just started two weeks ago without any issue, been waiting for the shipping notification and followed up a week ago. Customer service told me my order is secured and will dispatch shortly. Today, after two weeks of waiting, David Jones sent me a short email said my order is cancelled due to stock/website error.
Are you kidding me? Is this the way you running your business under such specific period? Clearly, you reserve all the stocks for people who go shopping in the store and replaced online orders for it. That s ridiculous and unacceptable! Never ever again!!