Poor customer service

on the 30th of May I ordered a skirt from Zando, my payment was accepted and I was eagerly awaiting my skirt (which I had ordered for a specific function). The skirt was supposed to be delivered on Friday 7th June as per Zando's policy. On the 4th of June I received an email from Zando's offering me a "voucher" for the amount I had already paid, and a notification that the skirt was "out of stock". Upon phoning and speaking to a very polite customer service agent, I was told there website had not been updated, and that they no longer had stock. My point is that I should have been told this earlier, and that their business is in the online space and they should update their website. I am still waiting for the Manager to phone me.