HDFC Bank — delay in refunding of amount rs.11900/- by hdfc bank

Address:

near twin town,gandhi maidan,patna, Patna, Bihar, 800023

Dear sir,
I fail to understand why there is so much delay in processing my request for my refund. The bank does not process the home loan request before the amount is deducted from our account and so much delay in refunding the amount is a matter of concern.
I am losing my interest on my amount as you have it for more than a month and more than a week since i have asked for a refund.
I want my total refund that is 11900/-by tomorrow at the earliest that is by 22 october 2019 as promised by your home loan representative mr. Deepak and his manager mr. Tarun or i will raise my complaint to the higher authorities in h. D. F. C or the grievance cell of rbi by 23 october 2019.