I get a ton of these calls at the library where I work. I f***ing love them. It's like someone gave me a toy to play with, and occasionally I'm able to get them to talk for a bit.
I prefer the ones where I work my way through the robot/soundboard to talk to a human, and I play real dumb for a minute or two, and wait to see how stupid I need to be to actually get scammed. It's fun.