Tata Sky — Unable to see the Maxium channel since 10 days.

I am using tata sky last 4yrs. and my account ID : [protected].Last 8 days onwords i am unable to see the maximum channels like(SPORTS, News, Music, all odia channel). For this issue i try to connected customer care and its not connected and give the miss call which no is provide by tatasky .Customer care saying we will call back within 24 hrs and still we are not getting any call from them. Last month what i can observed, after monthly payment they disconnect the chanell and then month end it will activate. My question is that: if your tata sky up gradation is going on after payment? (Last month onwords i observed after payment it will dis connected maximum chanel and then end of the month its automatically activate).Give me the clarification.Please resolve this issue as soon as possible or else we will disconnect the tata sky .