How to get the EMD amount Back from Bank

Respected Sir, E Auction notice dated on 10/07/2018, sale price of Rs.34,75,000/- On 27/07/2018 For the auction we paid Our EMD Amount of Rs. 3,50,000/- to Central Bank of India by the mode of RTGS. On 30/07/2018 Afternoon Mr. RAJARAMAN [Agent] came to my office and get my signature in some papers. He hurried up we didn’t go through the papers et all . Evening around 4.30 PM I received the telephone call from Central bank of India MR. Venkatachalam spoke with me and he introduce himself as a employee of central bank ask my email to fill the application, so i shared my Email id and password. but Without informing anything about the bit & auction details and date & timing for auction Central bank Declared me as a Successful bidder and send me the Email at the End of the day of 31/07/2018. In that email they mention to Pay the Rs. 5,18,750/- before 4 PM. On 01/08/2018. I was shocked & surprise by seeing the email and We contact the central bank personally on 01/08/2018. with in the short time we are not in the Clear path due to loan because my branch is not supporting for giving me the loan for purchase the property . on that day we have a sufficient fund flow we are ready to pay the 25% but rest of the central bank is not ready to give loan for that auction property we are eligible for loan our bank transaction and IT papers are good but the property is default one. So bank itself hesitate to give the loan. From then onwards lot of miscommunication and controversy from bank representative and the agent. We ask the bank to Return back my EMD amount or else to adjust the amount in my existing HL in central bank we Meet MR. Ramachandranya & He discus with RM of Central Bank and fix an appointment to meet him. Finally central bank RM compromise me and said “ Your money is Safe and We will give you an 2nd chance to participate in the auction we will inform you the date, your money is safe so no need to worry the EMD amount you paid is in bank you can participate in next bit”.   Suddenly after a month MR. Ramachandrayana called me on 12/09/2018 and informed me the auction date is 27/09/2018 so arrange the amount of 25% to participate in the 2nd auction, again i was shocked why this people are talking like this. and he told you have to pay another 10% [Rs. 3,50,000/-] of EMD amount to re-login for 2nd auction before 26/09/2018 . And on 28/09/2018 you have to pay the rest 25% [Rs. 5,18,750/-]. I ask him sir you already told my 1st EMD amount id their you can participate but suddenly now you are say me to pay again. Mr. Ramachandrayana told me that we will adjust the 1st EMD amount of 10% [ ie., Rs. 3,50,000/-] on 75% of balance amount & we will refund the amount of Rs. 3,50,000/- to your account . so again we are very confused not able to believe people in central bank. finally we reach the bank on 26/09/2018 evening to pay the EMD amount. But Central bank Gate way has been locked we are unable to transfer the amount.