Tata Sky — no signal in so many channels since 1 months

Address:

Ahmedabad, Gujarat

Dear Sir/Madam, I am facing problem of no signal in so many channels like aaj tak, ndtv, zee premier more than 20 channeles tata sky executive telling me that because so upgradation this happens if that then tata sky should refund some amount unfourtunately no tata sky employee take responsibility. Kindly look in to this matter since long v r facing this v r frustated now