They call every day, trying to tell me how to further my education. The number comes up as "unknown" on my caller ID, and a search shows that it belongs to a locksmith.

This number keeps calling me as well.  I picked up the first time, but after a pose on their end I hung up.  They call at least once a day and do not leave a message. I am blocking this call.

Call me everyday!  I have blocked them.   Painful.

Calls twice a day never leaves a message. And when I have answered there is no response from their end