Are you a legal heir to the Bank ?
One can file complaint with adequate documentary evidence, to book any guiilty person and if they are Public records, the better.
Bank can not part with information. You can not find fault with the Bank, as Bank can not come to know of death of any of lakhs of customers having their accounts with the Bank. Their responsibility commences only from date of notice.
The legal heir or the nominee can only seek information from the Bank officially, and except police no one can get such information from a Bank.
Let the legal heir provide such legal heir certificate obtained from Tehasildar office, with such photo identity and file RTI Application seeking information from CPIO of the Bank, the following information.
Brief facts: Settlement of death claim of......................Account numbers....................Expired on............ Information solicited by legal heir with such certificate and photo identity and copy of death certificate.
1)Please inform the name of the nominee as Registered in books of accounts.
2)Please provide statement of account from ................till closure (state one month before date of death)
3.Please inform transactions after date of death,
4.the place of ATM used for withdrawal of cash
5, the CCTV footage at the ATM showing the person that has withdrawn from a dead person's account with impersonation after the death.
Equipped with such relevant information decide further course of action after discussing with other claimants and advocate collectively, remembering mutual relations to be maintained within family