After 20 plus calls I just unplugged our phone. Even after they left a recorded message the calls continued, with the next one only seconds after the previous one disconnected. The message speaks of a survey and a cruise prize, offers the 9 key to stop further calls. I did not participate in the survey. I called the number and received a different message stating that the survey was over and again offered the 9 key to discontinue the calls. The 9 key has no effect.
Scam. Recording that repeats that "You've been chosen to win a trip to the Bahamas." Once you pick up, it will keep calling your number for up to 1 hour even if you hang up.