Unsolicited call to cell phone

Received a call to my cell phone saying it was the second notice that my vehicle warranty was expired. I do not have a vehicle warranty. It said to extend the warranty, I should press one. I pressed one and waiting for a while before a live male with a heavy accent came on the line and said "Vehicle model and year." I asked him how he got this phone number and why were they calling me. The guy hung up. When you call the number back, it gives you a recording saying the number is not valid.