B.e.s.t. Undertaking — Issued bill in high amount as a resident property

Address:

Wadala best office opp Ambedkar College

I m Deepak Patankar staying at shindewadi, naigaon, Mumbai Dadar East 400014.
2 weeks ago I have launched complaint about high bill amount which in Rs. Lakhs.
After went to concern office met so many officer, then finally they said it's our mistake we ll rectify. But till today date when I had called up they were not responding properly also their office lady said if any body to cut the supply then inform mine name and called me on the spot.
Is it anymore person will be their who can gave me solution on it.
Mine contact no is [protected]
Mine consumer no[protected]
Name registration was Sanjay Suresh Patankar (elder brother)