I had my number for two years when this company started calling my home. With an automated service. I just hang up when I hear the "Hellooooo!"
I got the number of a business that was closed down (reasons unknown to me), and now I get calls to resolve the final business matters of the "late" Lloyd Keller.
Never met the man, and I won't be seeking out his corpse for resolution. It would be really nice to NOT have to mail a certified letter to get the calls to stop. It's ridiculous. Especially since my number is listed, and it's super easy to go online and verify that I am, indeed, who I claim to be. I don't get paid to do the job that these people are supposed to do.
I will if the calls start to become a real problem, but it's clear that these folks aren't in customer service. My own bill collectors aren't this irritating.