Tata Sky — No one respond to the complaints

I am having tatasky for last 10 years but recently for last one month my Tatasky is giving troubles. March 12th we complained about lack of signals. No one responded. I it was automatically resolved in one week time. But now for last 13 days no signal at all. We have used their chat to complain, almost every day- they said in 24 hours it will be resolved. but that answer was repeated everyday. No one visited or called. We used their phone to complain but no one pick up after 25 min holding they hang up. We use their website, But after registering the complaint, next day we find it as closed, without a call or a visit. They are cutting money all these days for the service. We are really very very upset with the whole system Dr Nelms