Builder delay nightmare, need advice

3 years late, aur DPW Housing ka project Lodhi Colony mein ab tak complete nahi hua. Book kiya tha under-construction 3BHK, soch ke early bird discount milega. Ab EMI aur rent dono de raha hoon. Construction-linked plan ne toh drain kar diya hai. Ready-to-move lena chahiye tha kya? Mera ₹2.5Cr ka investment stuck hai. Kisi aur ne yeh jhela hai? Kya karein ab?