It's either, the business already has a website but didn't list it on YP, or I get fax numbers, diverted numbers to residential or just plain wrong numbers.
Is there a website or place where I can buy lists that are 'clean' and fit my criteria?
What is a structured data and how can structured data help to increase organic traffic
What is the use of structured data. How it is useful to my site. How to add structured data to my site