A guy with a middle-eastern accent said he was taking a survey. I told him I don't converse with criminals which he was because he ignored the do not call list. He became louder and I spoke over him suggesting he would feel better about himself if he got an honest job. He started screaming louder so I send a 15,000khz electronic whistle into his headpiece at which time the line went silent. I don't often do this but every now and then the temptation is overwhelming, LOL