Some answering machines come with a feature that announces the cID (number only) aloud. After a while you recognize the patterns and usually know when it's not worth answering.
2 calls within an hour. Did not pick up, no mssg. first call, 2nd call left a truncated mssg saying press 9 but no idea what the robot was looking for.
This is a discussion forum where one can report or describe suspicious or unknown phone calls, but reporting them here does not stop the calling. YOU have to take action to do that! (google is your friend). Consider buying a call blocker from your favorite store if nothing else works.
Call came in at 6:06PM, logged in as "UNKNOWN CALLER". It must have been a robo call because I heard what must be the last syllable of a message. (Robo calls talk over our voice message.) Doubt it's a call we care about.