Have you encountered those voicemail AI customer service representatives? Those can't route you anywhere so you're stuck talking to a robot.
I was just trying to schedule my daughter's dentist appointment and had to spend 10 minutes talking to an AI when I could have found a time that worked in 30 seconds with a human. And at the end of the whole process, she got my daughter's name wrong. It was demoralizing.
I have yet to encounter a phone system that refuses to provide a human, at least within business hours. But I've encountered those online, definitely, that aggressively want to hide any way to reach a person for something that you know in advance will be outside their script.