Plus, if the call comes from overseas they're not going to respect the DND from your country unless the fake caller is also from your country of origin. I can'

Plus, if the call comes from overseas they're not going to respect the DND from your country unless the fake caller is also from your country of origin. I can't say definitively but the vast majority of my spam calls are from South Asia or South East Asia (I'd guess Philistines based on accent). They typically don't respect the Australian Do Not Call register so much.