Here is the voice message I got. I didn't answer. Funny, I don't own a car.
"Heather I'm calling from the dealer processing department regarding your vehicles warranty. We sent you a final notice in the mail letting you know that your warranty has expired, and this is a final courtesy call to renew the warranty before we close the file would you like to speak to a warranty specialist? Would you like to speak to a warranty specialist? Would you like to speak to a warranty specialist?"
I file a complaint with the FTC every time I receive one of these calls. Lately, it's become nearly a full time job. But I'm going to keep doing it until something is done about it. That may be a very long time.
Ignore it. If it's a legitimate call they will leave a message. Anyone who doesn't leave a message or have an identifier you recognize is, by definition not important. Most land line phone companies and cell phones provide a facility to block any number you choose. Unfortunately, most of these "Robo-marketing" outfits don't call you based on something they know about you or what your needs might be. I don't own a car and still I get calls from the ones selling car insurance. The other frequent one usually comes up with the name '800-service'. This is a telemarketing company that is hired by anyone to do their calling for them. Don't pick it up unless you are prepared to either buy or donate, whichever they happen to be calling about or hang up on them because they don't take a polite no for an answer.