I received a call from this unknown number on my cell phone. The caller left no message.

Im going to find out who these [***] are.. Im going to go to cheyenne WY where they are located, and Im going to beat down the [***] with a metal baseball bat. Im not kidding.

This is a scam auto coverage agency.  I have told them more than a dozen times to quit calling me.  They call trying to sell me extended warranty coverage on a vehicle that was owned by my father and that was totaled more than 6 years ago.  My father has been dead for nearly 6 years.  I have asked them to quit calling and they keep calling.  How do I get these $0&s to quit calling?  I am on the no call list.  What else can I do?