Chapters.ca confuses me sometimes

One of the places I order hard to find items is from chapters.ca.

Chapters.ca site sells:

• DVDS
  
• Books
  
• CDS
  
• Have a used section from independent sellers

What I like about Chapters is they offer:

• Many different titles, some I can only find there
  
• Free shipping with tracking
• Able to pay via credit card or gift card
  

I order DVDS frequently. The majority of the time the dvd I want is not in stock, so it has to be ordered. This process usually takes a few weeks at the most. I got two e-mails today saying some of the items that i ordered are on backorder for another few weeks. About 12 hours later, I get an e-mail saying that the things that were backordered had been shipped that day to me.