RERA complaints in Noida Extension are a waste of time, change my mind.

Noida Extension mein APS Royal Homes dekh raha hoon, Msx Developers ka. Rent dete dete thak gaya hoon yaar. Builder delay kare toh RERA ka kya role hai? Suna hai bahut log RERA mein complaint karte hain. Kya RERA sach mein effective hai ya sirf paper pe? Koi actual legal options use kiya hai?