Disputes with management commitee (mc) flat owners association

1. The association registered under socities act and not under Karnataka Apartment owners Act . Is this valid 2. Majority of the members are with lower super built area than minority . They pass resolutions seeking higher maintenance charge . Wheras minority demand is equal charge for common area instead of sq ft. What is the exact law. How minority can prevent majority resorting to unfair allocation of costs for common areas