Hung up when I answered. Called back and got the 'number is disconnected' message

I answered but there was no one on the other end. Called back and it was disconnected.

This number rang and gave a bomb threat

This number rings and when told there is no Mr here they tell me I am wasting their time and hang up.

I miissed a call and this number appeared on my missed called list. When I phoned them back it was an unavailable number. High percentage f being a scam. Be careful