My Ghaziabad flat: Hidden costs ruining everything

Hidden charges for possession are a complete scam, seriously. Just got possession of my 3BHK in Raj Nagar Extension from Gaurs, and extra PLC, EDC, maintenance deposits, sab mila ke ₹3.5 lakh extra maang liye! Brochure mein toh kuch aur tha. Builders advertise ₹70L for a 3BHK, but actual cost ₹73.5L ho gaya. Aur construction quality bhi... ceilings mein cracks dikh rahe hain. ATS ya Mahagun ke projects mein bhi aisa hi hota hai kya? Koi experience share karega, yaar? What did you guys do about it?