I am using tata sky services for last 3 year, and till now there is no problem with it. Tata sky is really very nice product. It is like a family member to us.when ever there is technical glitches they provide extra services without any cost .
Their customer service is also very supportive and responsive. They knew our need very well and recently they started chota recharge for one day of rs 8, which is awesome. There monthly charges are also affordable just startes from 240 rupees .They cannot start any services without your permission so go for it without any hesitation . its best service.