Sony India — sony klv- 32w562d fhd led tv

I purchased sony led tv from big bazar, trivandrum, kerala on 21/08/2016 worth rs. 34, 990/- six months back there was a complain erased and contacted the sony service centre at kesavadasapuram, trivandrum. An executive came and told that there is a problem with ic and have to replace the mother board. The service centre ordered a new mother board directly from the company (As they told) and inserted the new mother board in my tv and they costs rs 6000/ for the mother board. Now a problem again erased with mother board.
Is the life of this tv only for two years?
I bought this tv at this amount not for two years.
I want this tv to be replace with a new one or repair this for free of cost.