It is a sorry state of affairs when you pay a phone bill and the company is in cahoots with advertisers or anyone else who they let disturb you without the ability to block them. Especially since the "Do Not Call" registry doesn't seem active or something.
They have been calling me for several weeks. I get stuff in mail from World Wildlife Federation but have never given them my phone number. I'm not a member, but I have donated to them. But I will no longer be donating after these pesky pestering calls.