This will also let the telco further train agents to handle calls without the humans once enough scenarios are in place.

Still, they could just give the employees training to learn additional accents.

The English accents around the world were left behind with the subsets of English people were taught to be able to aspire to entry level administrative jobs.

Someone recommended this to read, not sure if anyone else has read it: https://archive.org/details/educationascultu00carn

It feels like it bears some underpinning and contextual relevance.