Who called from 3013871630

continuous calls even after opting not to accept calls.  same call from several different numbers

The same robot message from many different numbers from all around U.S.  Each time "calling you about your property".  I stay on the line and the robot wants me to press a button...I don't, so it hangs up.  It never leaves a message and when I call back the number, it either rings forever, or there is some bizarre error message.
What a bunch of idiots.

I get the same thing at work every day from this number.  I don't see how they can get away with this.   Very, very rude!  What is the purpose?

Mortgage services repair line fraud

this number has called me 4 times today even though I am on the DO NOT CALL register