Sector 35: Hidden costs after moving in, feeling cheated

Sector 35 mein property lena, trust me, it's not just the purchase price. Just moved into my 3BHK from Goyal Estate Agency. Possession ke time, suddenly RWA charges aur water/power backup ka bill aa gaya. Builder ne brochure mein kabhi mention nahi kiya tha ki itna extra monthly jayega. Mera ₹1.2 Cr ka budget tha, ab ye hidden recurring costs EMI se zyada burden lag rahe hain. Kya aur log bhi Faridabad mein ye post-possession cost shock face kar rahe hain? How to deal with this misrepresentation?