Mahanagar Telephone Nigam [MTNL] — No connection but bill raised every month

Address:

Borivali West, Mumbai, Maharashtra

Telephone no[protected]
Customer Account no- [protected]

Had complained that there is no connection of Telephone number in January 2020. Complaint number 2968.

We have called several times but no one has ever answered the calls.
We also visited MTNL Borivali office & they said it will be resolved, but still nothing is done.

I have written mails to them, but there is no response on that too.

I again made online complaint, but they marked it Ok even without checking. Complaint number 7049.

Our phone is not working since January 2020. But bill has been raised every month. We want all the bills to be reversed.

They are not even accepting our surrender request & asking us to pay first.
When the landline connection is not working since January 2020 & even after repeated followups it is not being resolved why should I pay?