This number has called at least 10 times in the last week.  There is never anyone there when I answer, and the usual insurance message when I call it back.  How to stop this?

left a message on my box as following DIAL NINE, DIAL NINE NOW,
I never did,what the hell is going on,what would have happened if I would have dial nine???

calls a couple of times a day and never leaves a message. stop please.

called 4 times in the last 3 hours.  STOP ALREADY .  NO , no, no. I am not interested in whatever you have to sell.

I also get calls from that number almost everyday without being able to talk to anyone. What do they want ? Is there a way to make them STOP THIS ?