Who called from 4027928172

I received a call from "Dealer Process Department" regarding an offer for a warranty on my vehicle; a follow up to several deceptive mailed offers.  The caller hung up when I stated the first questions should be whether now is a good time to speak and second if I am interested in the offer instead of asking how many miles the vehicle has.  I attempted to call the number back in under a minute and the recording said the number is not in service.  I tried the same number from another phone and received a busy signal.

No one was there when I answered. Then they hung up.

Called my cell at 2:20 PM.  They hung up as soon as I answered.  I tried to call back and got a "number out of service" message.  Obvious scam.  I blocked them.

Call came in on my business cell. No voice-mail left.

I called back and was prompted to press 1 to be removed from the calling list. No need to worry about this number.

>> press 1 to be removed from the calling list. No need to worry about this number.  <<

You seem to be overly optimistic.
If the call was from a spammer (as previously posted), all you did was verify your phone was "live", and a live person answered it.