Sansui India — led tv not repaired from last 8 months

I purchased a new led tv from sansui out let there is some manufacturing fault occurring in led tv. I was first complain in28feb2018 there is no reply from customer service then few months ago the complain is automatically cancelled by area gsm kathua mr. Ashwani gupta then i was re-register the complain in7july2018 again there is no response from company. Then i was personally talking about my complaint to gsm mr. Ashwani gupta but there is no response from sansui company after few days my complaint is automatically cancelled by customer service. Then after i was registered third time complain in october 2018 again there was no response from the customer service provider. What i can do?