I got an automated voice telling me that my last Air Canada flight was selected for .... (I stopped listening). I get these occasionally from a fictitious WestJet auto-caller (different number). They ask you to press 1 for more information. I actually tried that, once for the WJ number, but I was left dangling, and didn't want to wait any longer.
With this one I didn't hit 1, but just waited to see how long they'd take to hang up. (May as well waste their time.)