Is Power Backup Charges Comes under Society Maintenance?

My father was the owner of the land on which apartment is created on 2012 at Ranchi Jharkhand by the local builder on agreement. Apartment contains 4 Floor and each floor contains 4 flats. All flats is occupied by owner and i have only one Flat left which is vacant from last 6 year[2012-18]. I am also paying the monthly maintenance charges regularly decided by the apartment society. I not leaving in Delhi so due to security concern i have never make available this flat for rent. Now i have some concern.. 1. As I am not leaving in flat and it is vacant but i am paying monthly maintenance which contains the Power backup(Petrol Diesel consumption in case of power cut) which is used by the other apartment flats. Is this valid? As per my info, power charges is not the part of maintenance and it should be charged separately.. 2. In 2015 society decided Anti seepage coated on outer Apartment wall and for this they charged approx Rs 30000 from each flat... I have also paid this but it was very painful for me. Is this valid? I think this should be the part of maintenance.. 3. In 2016 society decided to install security cameras and they have charged Rs 5000 from each flat.. Again i have paid this .. 4.Now society is demanding some amount (approx Rs 2000) for some process in municipal corporation activity.. I am really fed up with society demand... I am not leaving in society.. I am ready to pay the maintenance but why i am bound to pay the money for those facilities which i am not using (Like Power backup maintenance) Please advise.. I am very confuse and don't know from where i will get the correct information... If this is not the correct forum for this type of query then kindly advise where to query... email :- [deleted]