Got a call from this number. Voice says 'Congratulations! Your last AIR CANADA flight was chosen as the recipient of $999 credit!' Then a real person comes on, says 'Are you over 30 years old?' I say 'yes'.  He says 'Do you have a credit account in your name?' I say 'yes'. he says 'hang on for more details.'  Then hangs up on me.I redialled the number, and get some woman's voice mail which seems to be a personal home phone with voice mail.What'sthe purpose of hanging up on the person you called?  They didn't even try to scam me.