I have no idea who this caller is since we never answer robo calls, but ... we just signed up with www.nomorobo.com -- that's a brand new service that blocks robo calls! It works! The programmer who developed it is one of two persons who was awarded a cash prize from the Feds for coming up with a way of dealing with robocallers. It is free. Try it. It does NOT block legitimate charities or political calls. Read the website to see how it works. It just rolled out October 1st. We are very pleased.