called two days in a row - no voice mail

Keeps calling without leaving a VM

leaves no msg, yet continues to call. # belongs to:
James K Koval
Home (323) 461-9796
5826 Carlton Way, Apt 305
Los Angeles, CA 90028-6972

Same caller keeps calling; no message

continually calls asking for another person in the company, never tells who they are or why they are calling.
I tell them I am the EA to the person they are calling and I deal with all his calls, but they insist on hanging up and calling back and asking for him all over again. Very annoying.