This is a business for them to keep calling you , they hope you sign up and paid for their service ( to their sub company ) to provide you a non calling list, which in turn adding you to more calling list ! That keep on calling you again and again...
Called from "something" Yellow Pages on the internet. When I asked what company was that? and answered I've never heard of that she said something in a foreign language and hung up. This is a second call today and the last time I said no thank you and hung up.