I assume it's to make it seem like an actual call center rather than a scam. I recently got two phone scam attempts (credit card related) that sounded exactly like this.
Where is the difference between this and Indian support staff pretending to be in your vicinity by telling you about the local weather? Your version is arguably even worse because it can plausibly fool people more competently.
So you're telling the caller that it is an AI, and yet you can have a pleasant background audio experience.
Example of legit calls: the pizza delivery guy decided to call my phone instead of ringing the bell, for whatever reason.
No, it does not cost over thirty dollars to allow someone accused to call their loved ones. We pay taxes. I want my government to use the taxes and provide these calls for free.