United Public Opinion Group Promised free cruise after finishing phone survey, but the site I was sent to for retrieval was bogus. This was a scam. Internet

I was contacted via phone and an IVR took be through a survey.  As a reward I was promised 2 boarding passes for an all inclusive cruise to Nassau Bahamas.  After the survey I was directed to a live person who gathered my name, phone number, and zip code.  I was then transferred to another IVR where I was told to go to a website to confirm the personal information and give an email address for future communications.  I went to the site http://www.surveycruise.com/default.aspx and entered my phone number and zip code.  I got to see my personal information, the last name was misspelled.  I fixed it and continued to enter my e-mail address.  When I attempted to submit the form, I got the following error, "Mailbox unavailable.  The server response was: #5.1.0 Address rejected", at the end of the error was my e-mail address.  I clicked back and tried several ways to get past this, but it was impossible with other errors popping-up.  I tried to use the contact us form, but I also received a number of errors similar to this one.  This is a complete scam, their site doesn't work.  I wonder how they'll use the information that I gave to them.