Association

I bought a flat in a gated community, builder has charged Rs.1,70,000/- for 2bhk & 2,30,000/- for 3 bhk as one time maintenance, & said he will maintain for 2years first, again he changed n said 5years, one year is over, he says that year is not countable, and again they are charging swimming pool n badminton court charges from owners or residents, he has kept some members as association, they are his persons and gundas if we raise any issue we will be targeted, that maintenance amount has come to Rs.19 crores, we are getting worst quality of maintenance, and moreover all commercial rents in the community r taken by him, like supermarket, saloon, banquet halls, n other one day sales of outsiders all these taken by him, now association is charging Rs.1000/- from each flat as membership fund, when we buy a flat in community itself we are members why should we pay membership again, association has not taken anything in written from builder regarding maintenance amount, builder n Association r one, our association is registered, and has opened a bank account too, can u advice please