Yet another of these numbers that rings, doesn’t leave a message and when you call back it’s disconnected- blocked

Was working on my laptop, got a call answered it and my laptops camera went on grrrr. I instantly hung up, called it back and there was an automated answer "one moment please" and I was on hold. After about 20 seconds I hung up and blocked them. Obviously a scam.

Answered and got an instant hang up