Indosam, Noida 75 delay in possession and over charges

I booked a flat with Indosam, Sector 75, Noida in 2017 who promised possession in March, 2019. In the agreement they mentioned • Super area mentioned in the agreement is subject to change. Now they are offering possession of other towers and increases the super are from 1135 to 1178 sq. ft. without changing any dimension to carpet area. • The Company shall be entitled of 9 months of additional period in the event there is a delay in handing over possession. And in case of delay INR 5 per sq ft per month possession delay penalty,: Should I eligible for possession delay penalty in this case? • For other towers where they are offering possession are asking following Charges : o 50000+Tax Electricity Charges o 25000+Tax Electricity meter installation o 15000+Tax Ganga water and sevage o @ 30/sq ft Farmer Compansation o 6000+2000(installation charges) PNG Connection and infrastructure: o @20 sq. ft. IFMS o @2.75 24 months Maintenance Are there charges are correct or builder is misleading or over charging