What service or lack of

I was trying to find a book my mom wanted so I went online to a few book stores. One of the stores websites allows you to reserve a book online for pickup in the store later that day if it is available. When I checked the availability it said Might be available in the store. I then entered my email address and I book I wanted. The website stated within 2 hours I would receive a response back. Six hours later I received an email the book was not avaialble but I could order it online and receive within 2-4 weeks. Well, I thought I could find the book if I went to the store anyway. I go to the section where the new hardcover books should be and what do I find...yes the book I wanted! So happy:)