this number has called my cell and they don't answer

Got a call from this number on my cell, but missed it, 11:24 on February 25, 2010.  They left no message.  Called it back and got the same result as Sandy Webster-Worthy -- have no idea what they said as I don't speak anything but English.

Got this  call  didnt  answer and  no message>>>>>>> checked and it  lead me here there has to be a way to stop this stuipd  s**t !!!!!!!!!!!!!!!!!!!

The same thing happened to me a few hours ago.

I got this call a few minutes ago in Victoria BC - I didn't answer and there was no message.  I called it back and was out of service.  My number is unlisted....how did they get it?

They keep calling saying I won some travel points (I do not collect)then they ask for your credit card information.