Telemarketers - How do you deal with them?

I get treated like a telemarketer enough with my current job that I've wondered what happened to "No thanks, I'm not interested" went.

Part of my owrk criteria is following up students who had a personal interview with one of the college's representatives. It's for confirmation's sake so that we can know whether the rep is bullshitting us or not. Takes a minute at most per successful call. Of course, I get that selection of twats that think it's funny to have a voice mail that sounds like they really answered the phone, piss on me for bothering them at such and such time, or don't want to speak at all.

I believe out of the thousands of calls I've made and the asshats I've dealt with, only a few have just simply said "No thanks. We had the interview and decided against applications. Thanks anyway."

So yeah, that's all I say to the handful of telemarketers I've been picked out by and solicetrs to my door. A simple "No thank you."

Jam it back in, in the dark.