Why they didn't just hang up.
Sometimes you just don't, even if you think you should.
I remember once in the 1990s getting a cold call from a crafty sales person offering replacement windows (the glass kind, not the Microsoft kind.) As I was just 15 at the time I really had no interest in double-hung tilt-clean glazed whatevers but the guy on the phone kept talking and moving the conversation forward and next thing I know I'm giving him directions to my house so he can come over to inspect our current windows and give an estimate to replace them.
It all got sorted when my mother found out but to this day I can't explain why I didn't just hang up on the guy. It's as close to being hypnotized as I've ever been.