West Bengal State Electricity Distribution Company [WBSEDCL] — Meter defect and abnormally high estimated bill

My consumer no is[protected] .I was billed an amount of rs 4240/- for consumption of 698 units for sept 21 Oct 21 and Nov 21 qtr as my meter was defective..narration of the bill states " above amount on estimated basis as meter seems defective" . Now my flat has been lying vacant for the past several years and my normal units consumed is zero . My normal bill is the minimum meter rent which is rs 80/- . I approached my local distribution office immediately and submitted a written application for change of defective meter and reversal/ rectification of the bill. I did not receive any positive response from the local office and no solution regarding rectification of bill and my payment date is 16 th sept 21 after which I will be charged penalty for non payment . Now my question is what needs to be done from my end now if the local office does not acr ..whom should I approach . I have already visited local office (station manager)twice for follow up but nothing seems to move here. Kin dly help me as it is not possible for me to leave my office and run down to the local office for folow ups. Further online dockets for complaint is closed without resolution of the problem . Request your help on urgent basis.