Telemarketer seems to call 911.
https://www.youtube.com/watch?v=nBWywhv_Fxw
Tom Mabe Crashes Telemarketing Convention
https://www.youtube.com/watch?v=qDek_Bzem8k
He checked into the same hotel a telemarketing convention was staying, started calling them at 3 a.m. trying to sell them stuff.
Crystal Ball Telemarketer Prank by Tom Mabe
https://www.youtube.com/watch?v=TUOBNGdTN1Y