1) if the original sale deed between builder and borrower is missing then borrower does not have clear and marketable title to the property .
2) the bank generally does not sanction loan unless original sale deed is deposited with the bank
3)dont participate in auction
4) it appears there is collusion between bank and the builder .
5) bogus borrowers must have obtained loan as builder must not have been able to sell the flat . they must have paid one or two installment and then defaulted .
6)bank must have sanctioned loan to borrowers on basis of MOU or agreement for sale between builder and borrower . undertaking must have been taken by bank that as when regd sale deed is entered into it would be deposited with the bank