Like the rest... frequent calls usually at dinner time.  Never a message and if I answer, the robot caller disconnects.

Received a call at 6:10 pm. When I called the # back automation said something about a tootle voice analyzer.

Got my second call from this number.  No messages left.  I did not answer.  When you call it back you get an automated message that tells you state your name after tone and Google will try to connect you.  Nobody answers.  You then get told that the Google subscriber is not available and to leave a message.  I enjoyed leaving an entertaining message.

Received a call I answered no reply just a hang up.

Received 2-3 calls morning and evening. No messages left. Very annoying.