In the past, call centre workers in India and other low-wage countries would first go though courses teaching them how to pass for someone from the country they were specialising in, where they’d choose a name and persona, learn the accent/dialect and some basics that locals would be expected to know: if they, say, were doing Australia, they may end up watching some episodes of Neighbours, choosing a name like Shane or Kylie, and picking a footy team they support; if England, it’d be Eastenders, Premier League and something like Gareth or Nicky. They’d presumably do this at their own expense, though perhaps the call centre company might forward them the money and get it back from their pay.

Getting AI to make them sound like they’re from Bondi or Essex is probably more cost effective.