Just threaten them with fraud, they hang up and you get a "you have been removed" message. I've never been disconnected from a call so fast in my life. LOL
Her: What is the make and model of your vehicle
Me: you tell me which car you're calling about you called me, you should know
Her: I need the make and model of your vehicle
Me: either you have that information or this is a fraud call and I'm going to report you to the authorities
Computerized voice: Your phone number has been removed from our records *click*