Who called from 4162771688

He or She call and don't talk

I suspect the same thing.

Asnwered call and could faintly hear a man's voice but not well enough to understand.

This number has called numerous times, says nothing. I called back and get message, male voice to leave message.

I have just received a call. I said 'hello' a couple of times and then a man with a heavy accent said something about duct cleaning.
I said we did not have any and he did not answer me.
Also, we are on a 'No call' list.