Micromax Informatics — complaint not resolved by the company

I have raised two complaints with micromax regarding the audio out from 3.5 mm jack which has stopped working but there has been no resolution from the company. The assigned service center kept asking for more time as they said the spare part is on the way and later they sent a defecting part to replace after which the tv was not starting up. Their technician had to face embarrassment when tv didn't even start after installing the mother board he had brought with him. Then he left the place saying that he will get another one and then no response from the service center.
When i called them today, they are saying that there won't be any audio output from the 3.5 mm jack.
Hence, i am looking for justice and solution from the company.