Re: They've tried calling me before
I went to the effort of setting up a Windows 98 VM so that I could be on a Windows computer and still all their stuff wouldn't work (and I wouldn't have to dive into my memory to simulate what 98 would have done in response to their instructions). I still don't get any tech-themed scam calls. It is weird to be disappointed by not having criminals calling.
I used to get some more basic scams which started with a robot trying to weed out unlikely targets before the expensive humans got involved. I'm not sure whether my response to that was instrumental in getting them to stop or if they would have gone away anyway, but in case others want to test it, I followed the following process:
1. Answer any call from an unknown number.
2. Make a noise from your end, but it doesn't have to be hello.
3. If it's a human, they'll assume you greeted them and will start the conversation.
4. If it turns out to be a bot, just say nothing and wait for them to disconnect. If they call back, do it exactly the same way again.