I've had two in as many days. Calling from abroad (Indian accents) but claiming to be representing UK companies and wanting to help me with a virus on my computer.
I string them along in the hope it's taking up time they could be using to scam vulnerable people.
They get angry with me when they realise what I'm doing - but still they stay on the line.
Aibu to ask what you do, aside from hanging up? (Which I do if I am short of time).