Another call from this number, but this time caller left a voice mail, indicating that it was from National Enterprises.  The caller left a return phone number, but I could not understand all the numbers. I returned the call to the above number, and I spoke with a male who identified himself as "Mike Williams".  He was looking for someone else, who does not live with me.  He was insistent that I provide a number for this other person, and told me that "this is a business call." I repeated that the person he was seeking does not live with me.  He got a little nasty, and I told him to never call again.