Who called from 3123400672

I did the same thing and got the same automated message: "Congratulations! you just won a free cruise to the Bahamas!"  Called at 2:00 pm Central Time on my cell

Got a call today, too.  Thank you so much for the tip about blocking a number.  Had never scrolled down far enough to see that option.

Many different numbers about the same thing, but left no message here. Blocking this call too.

Just keeps calling does not leave message.

Answered, they listened for a few seconds and then hung up.