What to do if the maintenance of the society is charged excessively

I am residing in an apartment and the apartment has a association to take control of the day to day activities. As a maintenance cost they have fixed a cost of Rs 1950 per month. The break-up of fixed cost is as below; Payment to Security & maid Common Electricity Garbage Collection Deisel for Generator Cleaning materials Drinking water for guards & maid Buffer money for unforseen expenses Fresh water Tanks Cleaning Garden Maintenance Motor(s) repairs/Electrical Works Main Gates Repairs Bulbs Lift Annual Maintenance Contract Common Plumbing Issues - Drain Pipes Septic tanks Cleaning Apartment Adda Subscription Generator Annual Maintenance Transformer Annual Maintenance Borewell repair/Maintenance Minor civil works/Paintings Some tenants feels like the components added in the fixed cost must be borne by owners and as tenants they are not liable to pay them. Hence want to know what are the costs that will be covered by the tenants in the above list and what are the things by owners