Spam survey phone call.  I called back from another blocked, unlisted number I have, and you get this broken up message about "Thanks for calling.  The survey you called about has now finished.  If you wish to be placed on our do not call list, press star now", which is just a tactic to get you to confirm your number is active.  Now blocked.

Didn't answer, likely spam call

Just received a call from this telephone number. No message was left. Anonymous callback reached the familiar Survey Has Now Ended greeting.

Likely spammer.  Blocked

Free cruise scammer. What's new.