Did not answer, but it left a message. Message indicates a scam to me. Ostensibly a public opinion poll for which respondents are to receive cruise tickets. Not likely.
This is similar to caller scams in the past where numbers are dialed randomly until a connection is made. That's why unlisted and no-call list numbers end up receiving calls. If you're not going to follow the laws regarding fraud, why would you pay attention to a no-call list?