My 81 year old father received this call (female voice) asking if he owed the IRS any money and if so to press one. My dad called me to the room and the call abruptly ended. Only busy signal
Got a call from this number but didn't pick up. I was told if you pick up and say 'Hello' it sends a signal that it is a working number and they pass it on to other robocallers. So just don't pick up. Let it go to voice mail.