Just going through some of the phone calls I don't answer to check them out after receiving a different call from an apparent local phone number.  It seems as if someone was able to use a local business number for caller ID and I doubt if the business has a clue this is going on.  After calling the phone company, I learned that I can selectively block certain numbers.  It was recommended that I keep a list so, when I hit the maximum of phone numbers to block this way, I can start over.  This is getting rather annoying.