Whose number is this and why do they call

They call to say that I won a free cruise to the Bahamas, I had to answer a bunch of questions such as am I male or female, am I diabetic, home owner, HS or college degree, sewage or septic tank, helth insurance.  then a live operator came on to verify name, zip code, phone#.  they said to got to www.surveycruise.com to verify zip code and phone number they I will received boarding passes for cruise.  Not sure if it is all real or not, will find out soon I guess.

they called me during school , now ill never see my phone again

I just got the call noow in school >.>

Got a call today...no voice message when I didn't answer it.  Busy signal when I tried to call back.