If you've told them to stop calling and they persist, you might want to contact one of the law firms that keep advertising how they "go after" these guys. The FTC advises you send them a cease and desist letter: Here's the ftc site and the lawyer's site that after these guys for just this reason.
I have received a couple of calls from this number and similar ones. They have never left a message, but after some searching they all seem to be from a collection agency called Diversified Consultants.
I have never had any debt, but this might be related to the previous owner of my phone number since I get calls for her at least once a week.
Just an update. I finally answered about a week ago and it was Diversified Consultants. They aren't even trying to collect debt from me, but from someone they think I know. I told them I didn't know anyone with that name and to please stop calling. She said "OK, we'll remove you from our list", yet they still about three times a day, looking for a man I have never heard of.
If you've told them to stop calling and they persist, you might want to contact one of the law firms that keep advertising how they "go after" these guys. The FTC advises you send them a cease and desist letter: Here's the ftc site and the lawyer's site that after these guys for just this reason.