BANK NOT EXECUTING SALE DEED AFTER AUCTION SALE

Bank conducted E-auction under section 13(4) of SARFAESI Act for sale of mortgaged immovable property. Accordingly, my friend became the highest bidder with a bid of 21 lakhs and thereafter, as per the terms and conditions of auction, paid whole consideration amount to the bank. After that, the bank issued SALE CERTIFICATE in favour of my friend on 30/06/2020. In the Sale certificate, it is mentioned that "the bank has given and handed over the possession of the property to my friend. " But till today no possession is given to my friend. In fact, the property purchased by my friend is still under possession of the borrower. He is not ready to hand over the possession of the property. Nor the Bank is willing to hand over the possession of the property. My friend has several times requested authorised officer of the bank to execute sale deed of the property in his favour. But the bank is not willing to do the same. 1. What is the remedy available before us? 2. Can we approach civil court through a civil suit under specific relief act for seeking execution of sale deed in favour my friend? 3. Or we have to approach DRT? 4. DOES BANKING OMBUDSMAN has power in this matter? 5. Can we approach CONSUMER COURT for the sale?? 6. Which law or act is there relating to public auction?? please help