Paid for a book and didn't receive it

<p>I ordered a textbook from the online store more than a week ago and paid in full the same day. On the website it reflected that the book is in stock and will be delivered within 3 days. It's been 10 days now. I phoned twice, both times I was told that they don't have the book in stock and can't help me any further. They refuse to give me a date when they will have the book in stock and refuse to refund my money. I've contacted head office and have been refused any assistance till now. </p>