A Huge scam that has been exposed in Punjab National Bank is raising accountability of private Banks. Nirav Modi cheated the banks of more than Rs 11,000 crore after he misused Letter of Undertakings (LoU) issued by Punjab National Bank. Earlier, Vijay Mallya who couldn't repay the borrowings had left the country and has been staying in London. One of the banking experts said no private bank is going in the right direction. Bank employees should fight for the banks' existence as there is no one to take up the responsibility while people are losing trust in banks.