The robots are getting good! In fact, the person you may be talking to on the other end of the phone might actually be a clever AI program. How clever?
The topic is robot trolling, or trying to determine whether the bright and cheerful person selling you whatever is real. The link (below) contains some audio clips that are quite telling, but also chilling in how real the interaction can be.
You’re seeing the dawn of this type of tool. It will get better. In fact, in a few years (or even months), you may not be able to determine whether the conversation you’re having is with a human being or clever software.