3rd time this unrecognized number called to my cell phone.  I answered.  The call was from someone in a phone bank representing Keffer Mazda.  They wanted to confirm that we recently purchased a new car from Keffer and that we would be having the car serviced in their service department.  They asked me about the number of miles we put on the car/month, then became somewhat persistent about setting up the first service appointment, but I declined.

Just checking it out.