Robocall that consistently left only this message "...to be removed from the listing press 9." Over 10 times in one day.  No indication of who they are, or why they are calling.  One possibility is that it is a SIM card access scam that gets people to dial 90# or 900#, allowing access to using that line for long distance, and / or to frame innocent persons for nefarious calls and activities. Beware of requests for transfers to 900 or 800.