Phishing emails and scam phone calls are starting to be quite often here. I have decided several months ago, not to answer a call from a phone I don't know and not to open any email with links or attached content unless I know the source.
On the phone, at least you are slightly protected as they need to "get you" with their "story" to try to get info from you, it is clear if you do not answer or keep the conversation with them, there is not much they can so, although last summer I was amazed what I heard from an expert; In Spain, many people answers the phone with a "yes", it is quite common, the same way other countries use "hello". The problem is some scammers are starting to record that "yes" and then they use it to impersonate you on other systems.
When you realize how "professionals" they are becoming, It is sad to think about the old people, and how easily they can be cheated. And as you mention, this is only the beginning. I am starting to feel the only truth you will be able to trust is the one you hear from someone talking in front of you.
I don't answer any international calls, unless they come through my work number, but that is rare.
And a lot of people don't like answering the phone now, because they are "digital natives" who don't need to talk to anyone. I am sure that gullibility has increased.
Unless those Tesla robots get really good :)