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O2 deploys AI granny against scammers • The Register
(www.theregister.com)
This is a most excellent place for technology news and articles.
I've always done that. If it's not a contact, I let it go to voicemail. If it was actually important, they leave a message.
In this day and age, if it's actually important they'll probably immediately send you a text message/WhatsApp/etc. anyway.