rang wireline. left no message.

Some scammer pretending to sell something. All they really want is your credit card number so they can steal your money.

I did not answer and they did not leave a message. Curiously, several hours later I called (via Google voice that doesn't have a number assigned, so it would be anonymous) and the call would not go through saying the number was busy.

I did not answer and they did not leave a message. I did not attempt to call back.

Pre-recorded female voice on autodial trying to sell you another vehicle warranty because supposedly yours has expired, yada yada yada. It's just another scam. Your call may be different from mine. I don't know how many people/scammers/different scam apps use the same number. I've blocked them.