HDFC Bank — Mistreatment of customer

I have opened a joint NRI account with my Nale at HDFC Chinchwad branch after which I submitted a DD to deposit in my wife’s name. The DD was returned back due to a lack of proof for the source of the DD. The DD was from account closure from ICICI bank for which I had brought an account closure letter. But this letter was rejected at the branch to submit the DD and your employee Yogesh (HDFC Chinchwad Gaon, Pune branch) made insulting comments to me about have I had ever been outside of India before and do I even know how to NRI account works. I was shocked to hear this from your employee and how much he values the customers. I had a very good image of HDFC bank from my prior experience and did not believe this is how the customers are treated at your bank. I want to make a formal complaint against Yogesh for misbehaviour against customers and would like you to take some strict action or else I will be taking my business elsewhere.