Reliance Bigtv — not receiving many channels

From last one and half month most of the channels are not coming, technical problem is showing on the tv screen. Everyday one by one channels are being discontinued. I have subscribed for one year pack bronze 12 260 (N/s). We thought after 20th nov 17 problem will be solved, but no change. Your customer care is also not working. Hope you will solve the problem very soon. Kindly refund the amount of the discontinued channels.