Tata Teleservices (Karnataka) Consumer Care Society , 1939, 27th Cross, 9th Main, Banashankari 2nd Stage, Bangalore-560070 Karnataka
Tata Teleservices (Gujarat) Rajkot Saher Jilla Grahak Suraksha Mandal, 329, Popatbhai Sorathia Bhavan, Sadar Bazar, Rajkot – 360 001 (Gujarat)
Tata Teleservices (Bihar) ISLAMPUR RAMKRISHNAPALLY RURAL WELFARE SOCIETY At Ramakrishnapally,P.O. & P.S -Islampur District -Uttar Dinajpur West Bengal Pincode - 733202
Tata Teleservices (Andhra Pradesh) P.S.S. Educational Development Society, Erragudur-518442, Pamulapadu-MandalKurnool-District, Andhra Pradesh
Mahanagar Telephone Nigam Limited (Delhi) Room No. 204, 2nd Floor, Tax Building, MTNL Delhi, Eastern Court, Janpath, New Delhi - 110001.
Bharat Sanchar Nigam Limited (West Bengal) O/o The CGM, West Bengal Telecom Circle, 8 Red Cross Place, Kolkata-700001
