Very long back - about 3-4 years back. When I had certain issue and it was not resolved.
I called consumer grievance number of MTNL (printed on back of bill) and my issue was resolved in 2-3 days. (after 4-5 calls though)
I called consumer grievance number of MTNL (printed on back of bill) and my issue was resolved in 2-3 days. (after 4-5 calls though)