Caller: Trend Micro (they claim)

I was a client (software virus protection) for many years - with overseas staff. Received extremely predatory service (complaints made). Left them most disappointed. I made it clear to never call me again. I hung up as soon as they said “I am calling about your Trend Micro security”.
Never, never going back out of principle. The caller may or may not have been from that company - their number was not recognised - you can be sure I kept their number in my address book so I had immediate recognition if they called me again.
Number (above) blocked!