Reliance Digital — service stopped well before the completion of contract

Address:

Village Dharanda(Janed), PO Randhara District Mandi, Mandi, Himachal Pradesh, 175001

I have booked a connection as per advertisement made by bigtv in on 2nd march, 2018 with deposting rs 500.
They promised to install by 30 to 45 days and remains payment i e rs 1500 is to be made at the time of installation of set top box.
Big tv failed to install by the time frame but keep on promising to do so soon.in january 2019 the day come and istallation was made. But the amount they charged now was rs 1750 instead of rs 1500 as promised in the beging. After some months they changed the name to independent tv and few more months later the services were stopped and again they promised to start telecast soon. Now they have even stopped the customer care service. And leave no room to lodge complaint.