Called me and a robovoice told me the warranty on my 16 year old car just expired and asked if I wanted to speak to a person. I said yes and it hung up on me.

Same thing happened here at the shop that I work at.  Call showed coming from Tiptonville, TN. I was going to speak to a rep. and when I said yes, the phone just went blank then it started popping in the background so I knew it had hung up on me.  2nd day this has happened, think yesterday was from another number though. I just wanted them to specify which vehicle since we are just a repair shop and don't deal in warranties.

I got a call saying my warranty expired. They quoted me a price to renew the warranty, and when I said no thanks, the rep said "No [***]!". Then, he hung up on me.

Sounds like a new twist on the old "get you to say Yes" scam
There was a scam where a robocall would call and get people to say yes. They would record that then use your voice recording to get sign up for all kinds of stuff.

Good point Dee! Did not even think of the "yes" scam til you mentioned it!!! Thx ...