For 2 years ive been calling them sweet IRS and Tech Support, and i learned how to make them angry
1.Try to be annoying (Talk random stuff non stop)
2.Laugh Loud a lot (They get mad and angry)
3.Say you're reporting them to Interpol or the FBI.
4.Call them a rundi or madarchod
5.Tell them you're calling them all day
6.Call from different numbers (Use FireRTC)