I do too and zi want it stopped. My phone number is private and I pay to leep it that way. Its childish to call and not leave a mrssage. I know NO ONE in Boise, ID unless its a angry Trump supporter with a written Twitter reply.
Some "woman" by the name of "Ashley" left a message as if I had answered. Spam callers trying to get information to scam you or your family. Just block the number and move on.
Very good advice on blocking numbers like this one. You can look on google play or the i-store to block numbers like this one. They are usually free to install. This is what I have done. Do your own research and pick the right one for you.