Mahanagar Telephone Nigam [MTNL] — Phone dead for 3 months and still no one from MTNL has shown up for repairs

CA#[protected]
Complaint number received from MTNL#3965
Our phone has been dead for 3 months (since December) now and despite lodging multiple complaints no one has shown up for repairs. We have visited the MTNL office 6 times so far and the repairs dept personnel keep telling us someone will come by today to address the issue but so far, no one has shown up. Plus we have paid 6 months bill in advance from Feb - Jul and still no response. We would like to request a fair compensation for the 3 months of discontinued service or adjustment in the next billing cycle plus an apology from the MTNL repairs dept for completely ignoring the complaints and making senior citizens make multiple trips to the MTNL office for follow up inquiries when it should be the other way round!
Thank You.