https://www.donotcall.gov.au/

This is the site where you register your number/s so that you don't get all of those bothersome calls especially when you're having dinner.

It won't stop ALL calls but it stops the majority.

Bev

I can vouch for this, it works a treat!

I don't mind the occasional "NRMA"  and "Spastic Society" calls coming from Australia by regular working Australians that I still get every now again...

but those telephone company ones made by those with heavy accents that make you feel rude every time you ask them to repeat what they just said 3 times...they don't happen anymore. 

I should have mentioned that charities (Australian) are exempt from being blocked.

here here.  best thing they ever introduced.