Noida Ext builder maintenance charges are a scam, fight me.

Noida Extension, just moved in last month and already regretting some choices. My Gaursons project mein finishing issues hain – cracks, paint work average. Builder ka customer support after possession toh bilkul gayaab ho gaya hai. My brother is considering ATS ya Godrej Properties. Kya unki construction quality aur post-possession service better hai? Unke maintenance charges kaise hain, reasonable ya extortion? Want to know your first-hand experiences.