Municipal Corporation Of Thane — Redevelopment of 35+ years old building

Ashray society Anand park thane west 400601. This building (Ashray society) is now 35+ years old. We need help as the builder is not ready to talk or take action. The society is not taking initiatives on the redevelopment talks but we are spending money on repairs which is recurring and of no use when all the ewalls are cracking, puffing up, so much so floor weight is bending and lower floors cannot shut their windows because of this! Because The municipal corporation is not showing our individual building in our structural layout because still many building collectively lying under a structural layout. So we need to seperate these layouts so that we can immediately start our redevelopment.
Also due to rustamjee Lodha constructions they have narrowed the drainage lines therefore whenever there is heavy rain or choke dirty drain sewer backwater flow runs and submerge the ground floor. We have lots of damages to our properties, electronics Everydayy is like living in danger. Please help!