Samsung Faulty TV internet

Purchased a UN55H7150 in June 2014 for $1494.99.  One month after the purchase, we  unplugged the tv and left for a job in another state.  Returned home, used the tv from August 2015 until November 2015 and again for a month in the fall of 2016. Therefore, we used the tv for less than six months and currently, we have a horizontal shadow across the middle third of the picture.  I understand that the warranty is over but seriously, Samsung should stand behind a product that costs almost 1500 dollars and has not lasted more than six months.  Samsung customer service said there is nothing they can do.  We purchased the tv at hhgregg.  hhgregg said we should have purchased the extended warranty.  We do not feel that we should have to pay extra for extended service for a tv that should last longer than 6 months.