I have never phoned customer support to:
- View my account details (available online)
- Find out about new plans and promos (available online)
- Pay my bill (available online)
- etc (available online)
I have only phoned customer support to:
- Negotiate a better rate (requires a human)
- Argue about excess charges on my bill (requires a human)
- Get put on a off-market plan (ie loyalty, retention, etc -- requires a human)
I guess if there really are that many people phoning support with trivial questions, a voice assistant will free up the phone line for people who actually need a human. I suspect it won't, as they'll reduce the number of support employees accordingly.