Indian Overseas Bank — Tamil nadu govt. Family pension da not paid

Address:

Tiruvannamalai, Tamil Nadu, 630611

My husband R. Krishnan was a Police Constable (PC 470) in Sivaganga Dist, Tamil Nadu State. He got his Tamil Nadu Govt. Police Department Pension through the IOB bank, Tiruppuvanam Branch directly (not through the district treasury). After his death, I am getting my Tamil Nadu Government Police Department Family Pension through the same bank. IFSC : IOBA 0000528, Account Number[protected], Scheme Cd :SB-PUB. Customer id : 12401753.
In Sep 2015, I found wonder that I am not being paid the enhanced Tamil Nadu Govt. DA by the IOB bank with effect from July 2010. Instantly I have lodged a complaint dated 24/09/2015 with the IOB Tiruppuvanam Branch Manager, and Regional Chief Manager at Karaikudi. I with my son meet both the Branch Manager and Regional Chief Manager in person also. But even after my complaint, and three months, they have not paid the TN Govt enhanced DA and arrears w.e.f. July 2010.
I am a widow aged 78. I feel that the TN Govt enhanced DA money due to me is cheated by the IOB bank personnel. I request the RBI Officers to be kind enough to look in to my grievance and arrange to pay the enhanced DA and arrears w.e.f. July 2010 due to me. Thanking you.