home loan complaint

Location/place: nashik,maharashtra

Name of company/service: banking complaint

sir,
Myself Dr.deepali patil from nasik,maharashtra.
we had taken plot loan of Rs.25L from idbi bank nasik branch last year.
we r paying installments regularly.
since this jan.12 we planned to construct home on the same plot.we cconsulted to bank for that home loan.
After submission of all documents,they told that after your plinth we will approve the loan.
Accordingly we started our constuction,and bank checked all documents from feb to June12.
Bank gave us sanction letter of loan and processing fee is already deducted from my account.
As per the bank they were going to issue the cheque on next day.But on the second day bank asked for original parent sale deed[year 1982]
we had already submitted xerox of the same.But thn manager told us that from 9 april 12 it is compulsory to submit original copy of parent sale deed,otherwise your loan proposal will be rejected.
The original owner is expired and we contacted his children but they too dont have that original copy.
My name is already officially come on 7-12 utara.that we already submitted to the bank.The bank person told that IDBI Banks lawyer also said that there is no legal problem in my case.
Sub Registrar is ready to provide certified copy of parent deed,but bank manager is not agree for that,they want original one only.
Thus bank is rejecting our proposal.
Now what should I do? Is there any solution in my case?please guide me urgently.As bank had already taken 6 months for proposal n now rejecting us.if they had problem regarding documents they have to tell us before previous loan.what is ur opinion?

my contact no Dr.Deepali Patil [M.S.]-9850179746.
THANKING YOU.