I'm not a technical person, so my entry is based on an idea which simply requires that all telemarketers or companies who use these robocalling techniques use a numerical and/or unique letter code that is generated when the call is made. Home phones and cells phones will require an app or feature with the option to automatically reject these calls when turned "on". Of course there would entail development of the app or land line feature, so would be for newer phones when the app or feature is developed.
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