I still remember a hiring ad for McDonalds. "Dont you want a job that makes you smile?"

By the time i got out of customer service i was getting a lot of complaints about how little it sounded i cared. (I didn't)

Related and worth the watch for those who haven't yet - Sorry to Bother You

Like that SNL skit where Phil Hartman can't remember what his real voice sounds like, that is me after a day of toil in the customer service factory

I worked as one of my first jobs for my country's telecoms former monopoly

We had to use the same phrase and say it with a smile when answering the phone: "welcome to Telstra, Psud speaking"

I now hate it when I slip into the vocal register I used there, but at least when I do, I'm usually using it ironically