Multiole Calls Daily!

For the past 4 months i have been receiving triple daily calls from this company and each time it's a different person. They start by saying Mrs. G, a d i respond, may I tell her who's calling  and they then go on....each time I've told them Mrs G says to take her name off your list she's on the do not call list and never hires anyone who calls her and then I hang up! I'm getting so sick of these guys and since my number is unlisted wonder how they know my name. Of course, they just keep calling. I don't feel sorry for the people calling because they know they are involved in a scam.