Caribbean Cruise Line political survey and free cruise offer orlando, Florida

I got a call asking if I would participate in a short political survey, three questions... then told that I received a free cruise to the Bahamas.  I was not able to access the internet and totally fell into their trap.  They required port fees and then suckered me into the extended stay package.  So I'm out $560 and feel like a schmuck.  Don't fall for this one.  When I realized what had happened, I called my credit card company and tried to get the charge stopped, but all I can do is wait for it to post and then try to dispute the charge, but since I agreed to it I think I might just be out of luck.  The phone number they use is 800-221-8200.  They put you on hold and have a very convincing background recording of all the wonderful things you can do on the ship, blah blah.  They called originally from 503-902-8122.... don't answer!