Reliance Bigtv — complaining about channels not working

I tried to contact customer care number i could not speak and the same staff behaviour is very ride they are disconnected call beetween shorting out issue. My start chennels not working after installation a 2 month and the same some sports chennels also unavailable. But whome should i contact... I tried to call and also mail to customer care support and comparing offixer but could not gate any response... Very perhetic service and staff behaviour