CGHS Mayfair: My reality check on hidden builder costs

CGHS Mayfair mein hidden charges ka scene kuch aur hi hai. I work in real estate, so I thought I knew all the tricks. But possession ke time, registry ke alawa bhi itne saare extra costs dikhe. Maintenance deposits, power backup charges, sab kuch add ho gaya. Construction quality bhi thoda iffy laga, especially plaster work. Customer support toh book karne ke baad almost zero ho gaya. Koi phone nahi uthata. Has anyone else faced this with CGHS Group in Delhi? Matlab, after-sales service kitni bekar hai?