Failure to hand over the physical possession of the auctioned property to the bidder by the bank

I participated in the auction sale of a property(house) under SARFAESI act conducted by a private bank based on symbolic possession. I was the successful bidder. After I paid 25% of the bid amount, I was orally intimated that the confirmation certificate for the property will be issued to me within one month but it was not done. I was ready to pay the balance amount(75% of the bid amount) but the bank did not receive the amount. As per the manager, there is a conditional interim order by Debts Recovery Tribunal(DRT) not to confirm the sale for 2 months. There was a case in the court by the loan defaulter regarding the property. The manager did not communicate this to me before I pay 25% of the bid amount. He said this to me after one month of paying the amount & that too, after I asked him. He concealed this information. As I cannot wait for another two months, I told the bank to refund the amount. I sent mails to different levels of the bank up to nodal officer. No response. Sale confirmation letter was issued to me after 2 months. Then, the bank told me to pay 75% of the bid amount. I sent a letter to them stating that I will pay the balance amount only if the bank is ready to hand over the physical possession of the asset to me. The bank replied that 25% of bid amount already paid by me shall be forfeited if I fail to pay the balance amount. I paid 75% of the bid amount and the bank informed that the physical possession of the secured asset will be handed over to me within a month. Three months passed. But, they have not handed over the physical possession of the secured asset to me so far. I have been waiting for the past 7 months(from the auction date). There is no response from the bank. Whenever I ask the bank, they simply reply that they are in the process of taking the physical possession. I told them to refund my money but they don't do. How can I get my money from the bank with interest?