Mahanagar Telephone Nigam [MTNL] — Disconnection of land line for 91 year old

Address:

E-103 Greater Kailash part-3

My mother is 91 years of age. Her phone 29222738 has not been working for over a year. She has sent the cancellation form but is being told top go in person to in COVID environment. People on the phone are curt and not helpful]ul, they disconnect without hearing the conversation.
Please note that my mother will no longer pay any bills and that non payment will be MTNL's responsibility.
I can't believe that Senior citizens ate being harassed like this.
Our country needs to do better!!!