This person calls and leaves no message. I have a blocked number but still get these annoying calls

I just got a call from this number. did not answer and they did not leave vm. called back and magically the call would not go through.

Got a call with a recorded message that said I entered to win a cruise.  Uh...no I didn't!!!!

Received robo-call from this number today.  Chicago, IL.  Automated message states I registered for a free cruise from Royal Caribbean.  I did not.  Just a scam call. Does Royal Caribbean know or care?

yeah total scam. said I won a cruise, for which I didn't enter but all I had to do was pay the 98$ in taxes for myself and whoever I wanted to take to secure my free cruise for 15 months they just needed a 6 week notice for when I wanted to take this 'magical cruise'. Apparently in this dream world I won a trip for 2 to the Bahamas on Royal Caribbean cruise line, HA!. I told him to send me an email with the restrictions and package detail and I'd love to read it. He repeated about the taxes thing so I repeated about sending me an email and I told him he was crazy if he thought I was going to give him my credit card info just because he called me and told me a won a cruise....and imagine what happened next, he hung up on me. Unfortunately so many people will probably fall for this..