Unregistered housing society threatening to disconnect water supply to my flat

Hi, I have a flat in an apartment and some people formed a ad hoc society initially to deal with builder to complete pending work. The office bearers are relatives of builder and they started collecting money as maintenance long before the complex construction was completed. From 2016 July to 2020 June i paid the maintenance but i realised the committee members are deviating the attention from builder and trying to rule everyone in society with threats of water disconnection unless you pay maintenance. I asked them to register the society and audit the money collected monthly . They ignored me so I filled a civil case and as usual they threatened me with water disconnection. I brought a stay from court then unfortunately due to bar association fight my stay got vacated and open lawyer came to know that and society PPL came to cut my water.i cleared all my dues on same day to keep my water supply. Now again they are asking me to pay penalty of 25k and their legal fees for the case I have filed on them.if I don't pay they will disconnect my water. Police is not doing anything. Their lawyer is saying to police this is civil matter. I am helpless. Fighting for a right cause is so exhausting and no authority is helping us. Unregistered society is acting as goons. Not sure whom to approach and where to go.