Rec'd a call from Jennifer claiming to be from a Carribean Cruise Line. I told her I was on the Do not Call List and asked if she could please make sure not to call me again. She replied with a curt, "No."  I said, "All right then, I'm going to hang up since you are so rude."

I can confirm the above.  I'm also on do not call list.  They called twice exactly and hour apart.  I missed both calls, so I called back and received a very similar response from an unnamed woman.  Shady marketing or total scam.

Got two calls half hour apart. I don't answer numbers I don't know. They didn't leave a message either. I've come to realize that if you just don't answer these calls, they eventually stop. I'm patient.