Vijay Sales — Led tv

Address:

Ahmedabad, Gujarat, 380008

I have purchase a 32 inche vise led tv from maninagar, ahmedabad on 26/11/2015.
tv working suddenly stopped, i tried to contact on their customer care no was not responded on 2nd march, hence visited to the store on 3rd and booked a complain.their technician visited at home and replies that there is some power supply problem in side the product hence will have to replace some part.
today i visited to the store and asked to customer care exe that how long time it will take to repair it they replaied that we do not have the specific part and can not say how long time it will take, i asked from them to asure me by giving me in righting that my complain will resolve in 2/3 days they refused and not only that when i arruged with them about the vise product is of vijay sales and are not able to solve the problem, their store manager said do what ever you can and you can even go to court but we will not give any thing in righting as we are not sure how long time it can take to get the part of tv,
its almost 4 days my tv is not working.
how redeculous its that its their own product and they dont have the part of the tv.
what should i do ahead kindly let me know.