I was in one congregation where no one was answering and the conductor threatened to call on people who didn't have their hands up....and he did. The attendance was lower the next meeting.
Yep, I've seen this too several times over the years. It's one of the stupidest things to do in that situation. The problem was that once some pillock with an ego is made an elder it takes years to take it away from him again and the poor congregation he is inflicted on has to suffer thru it.