A week after payment yet no shipment

On Thursday last week I paid for a Sony z5 premium chrome, the online stock showed 5units available and shipping within 2days and you'll get your phone in 6working days. <br> <br> On Monday no progress I call the online service and the gentleman assures me by email that they will be shipping shortly. The online stock on the same day went down by one. <br> <br> I call again today and yet no shipping and now they suddenly don't have stock. You've taken my money yet you haven't delivered the product or service in due time. <br> <br> Please commite to when or if you can deliver or else I will cancel. I don't want to wait anther week.