They called SIX times today!  Six times!  Four times they just hung up and the last two times someone was on the line.  Each time they knew my last name and the caller ID says it's a call from Oxnard CA which is in the same county that I live in (Ventura County) which is why I answered each time.  The first time the woman said they were from a ventilation company and I told her I was on my way out.  She said she understood I was busy and that she would make it brief but I just hung up.  This last time they called  I told the woman to stop calling.  They were different women each call.  Both sounded like they had asian accents.