I used to get scam calls when I lived in the UK. When I moved, I bought an 0871 premium rate phone number. Since then, only family & friends get my real number. Scammers like banks, insurance companies & every form I ever fill in, get my 0871 number. The 0871 call still reaches me due to the redirection in place, however the scammer computers will block calling my number because it is premium rate. The very few desperate scammers that do call (about 1 every 2 months or so), I can keep talking as it makes me money. I get about £60 per year from people calling my 0871 number.