Disgusted - Item out of stock

This week I decided to order a laptop on Contract, I spoke to numerous operators and then placed my order, not once did anyone tell me the item was out of stock. I have a voice recorded message with the operator to say that the item will be delivered on Thursday 21st Feb. So yesterday afternoon when I had not received anything I phoned the sales department, only to be told the item is out of stock and you will get it next week. How can you not tell your customer that the item is out of stock. I am needing this urgently as it is for my daughter to use at Varsity. Had I known this item was out of stock I would have either taken something else or taken my business elsewere.

totally disgusted with the service