Death of the Yellow Pages
It's no secret, the yellow pages (and all other brands) are on their dieing breath when it comes to delivered, paper based telephone books. You may or may not know that they still charge for ad placements in a medium that is all but forgotten in the internet generation. Simply ask anyone under the age of 30 when the last time they used a phone book. You'll either hear an "I have no idea" or a "probably 5 or 6 years ago".
If they can't Google you and find your website, you simply don't exist to those prospective customers.