New 2015 Rancher: Need advice

Hi All; This is my first post here and wish it was a different subject. I just received my new Rancher from the dealer. The paper work shows 1 mile on the odo. The actual mileage is 25.7 miles and 8.4 hours. I called the sales guy and asked why the mileage was not right. Was this a demo and what happened. He was very defensive and said it was not a demo but was mileage put on it from taking it in and out each day. He mentioned what would make me happy and tried to play it down. My question is what would you do? I don’t like being over bearing and making a mountain out of a mole hill, but it is just not right. Thanks for any help!