Builder and Bank Issue of Loan

I purchased a 2BHK FLAT, from a builder with 90% bank finance under subvention plan. by mar-apr 2019, builder raise a demand of Rs. 1 lakh, every time bank was paying to builder as per their demand raising. but this time bank did not paid the amount, i came to know after 3 month when builder message me for late payment charges. when i started checking / investigation i found, bank could not pay that amount due to their internal issues, even they did not mentioned it. when i discussed with builder, they started to force me for doing the payment. as i was not able to pay amount on my behalf, i stared asking questions to builder. what i found builder was not answering my phone calls / mail messages. i did mail them many times and i found they are not responding it. i finally concluded, both builder and bank are not responding as per their duty. finally i decided to quit from that. but now builder is not ready to pay a single rupies back, and bank is behaving as noting. i paid, 1.35 Lakh as cash, and bank have funded approx 5.5 Lakh. Still property is under construction, and i want, bank should bare his fault why should I.