I understand that the scam caller 'has a job to do' etc. But surely one could choose an honest job, not one which aims to defraud people out of their money by slyly obtaining their bank details or enter their computer system illegally?

It's often the elderly who are taken in by these people. The younger folk are more savvy.

I'm the first to feel compassion for people doing poorly-paid work under awful conditions, but not dishonest ones.

By the way, I find Pakistani, Bangladeshi and Indian accents (when they speak English) to be completely similar. I can usually identify a Nigerian accent (very attractive :) ) but I certainly couldn't distinguish a Pakistani one from any other Asian country. They all have the retroflex consonant 't' for example.