That being said, when we bought a stove at Home Depot, we received a personal call from the truck driver delivering the product to see if we were ready and where would be the most convenient place for him to carry it into the house.
So, automation probably does work sometimes, but if it's not all the time, then it's just an administration problem (as noted in the thread above)
If you get 10 customers a day, you treat each one like they're a duke; if 100 a day, each one is made to feel like a person. 1000 customers per day are a vague blur, an avalanche of humanity of whom only occasional glimpses are clear, 10,000 customers a day is statistics, and 10 Million per day is an abstraction.
Different businesses deal with different customers and different customer volumes change the shape and functionality of the organizations that serve them.
The question for you is, at what scale does a business built on somewhat random customer service experiences work?
That said: we get automated calls from a couple of different things in our life, and while I can't say that I love the calls, they are effective --- they actually change behavior.