I'd also add that even the reasoning for why the human isn't replaceable here is debatable. I've never called a call centre for sympathy or jokes. It's always because I have a query I want an answer to or problem I want sorted ASAP.
Assuming the benefit of an AI call centre would be that I wouldn't have to wait on hold, I'd rather have the AI centre than the inefficient human one. In scenarios where an AI can't easily deal with the query, then sure, I see why it would be good to have a sympathetic human who can take the call, but 90% of the time an AI would do just fine.
I think this is what a lot of people get wrong about automation. Everyone likes to point out how their job has these one or two really difficult bits, while missing that 90% of the job is easy.
As an example, here in the UK a lot of cashiers have now been replaced with self-checkouts, despite the fact we're still far from fully automating the cashier's job. We still need a couple of people on hand when there's security tags to remove or when someone needs IDing, etc. But that doesn't change the fact there's far fewer of them because 90% of the job can be automated.