Same thing happened to me. When I asked for a number where I could call them back the guy immediately hung up on me. SCAM!

They just called me too and the guy on the phone was very rude. Said I had won a free cruise from Carnival, etc. Told me I would need to pay the taxes on it (more than once), and when I asked for a phone number where I could call them back he hung up. SCAM!

This was a recorded message saying my name was selected to win a cruise from a sweepstakes I filled out (which is a lie).
I pressed 1 to speak to an operator and was connected to "John". He started going through his speech and I interrupted him and asked for his company name- he said "Travel Services".
I then asked him for his phone number and he said "what do you need that for". I then told him I was on the FTC and State of Florida Do Not Call list and that he was violating both by calling me.
He then said he was calling from Carnival Cruises and I should report them. I asked for their number and he said "look it up yourself" and then hung up.

No message left, and when you call back, it doesn't even ring.  I too am on the DO NOT CALL list.  Blocked them from being able to call again.  If you have a smart phone, you can block numbers

Keep getting calls