First received a call from this number yesterday.  Since it was in my area code, I answered.  Usually I don't if I don't recognize the number.  Person with a very thick foreign accent asked for me by name.  I would not say that I was who he had called and asked who they were. He said he could not say unless he spoke to the person he named.  I hung up.  The same number called this morning and I answered and hung up without speaking.  Just now they called again and after I said Hello, asked for me by name .  This time it was a female with a different foreign accent.  I had gone to the hardware store and bought a loud whistle which I blew as soon as I answered the call and said Hello.  I am anxious to see if the calls stop but have the whistle handy.