AT&T sent out a mass messaging about the

RoboCalls – calls about your car warranty. Your warranty is expiring. Please listen carefully. An important message about your auto warranty.
They want to sell you a warranty over what you have.
Push 1 to get to an operator. They want your credit card. They get paid by the bank.
1000 expiring warranty complaints. Scam.
Phone companies have a hard time tracking them down. Warranty complaints are running rampant. Be sure to file a complaint and the authorities

Calls coming from St. Louis area.

Best step is not to answer the phone.

Don’t bother with an extended warranty unless you decide to keep the car for a long period.