Wait! Aren’t we supposed to point out to the gunman that he is in violation of a Gun Free Zone sign and will be in really big big trouble if he does not leave immediately? (sarc)
Nearing age 65 I was being hounded to death by robocalls. Sometimes 30 a day. I installed a Tele-A-zapper two months ago. When the caller ID shows a telemarketer I pick up the phone for 1 to 2 seconds and then hang up. I have Zapped 51 numbers so far. 14 of these numbers I had to Zap 2 or 3 times but my phone is virtually silent now. Very easy to install and use.