HDFC Bank — home loan

Address: Koparkhairne, Mumbai City, Maharashtra, 400709

I applied for HDFC home loan from one of the home loan branch where they clearly mentioned that I am not eligible for the loan due to 2 reasons which they gave me.

Now when I enquired for the loan from different HDFC branch there one of the executive told me that I am elligible for the loan and guaranteed that he will process my loan application also guaranteed me that it is not going to rejected due to previous 2 reasons.
He asked me to submit all the documents with the cheque. I given him cheque and documents also while submitting the nonrefundable clause he assured me that if my loan will get cancelled then the cheque amount will be credited back to me as I already explained him the earlier scenario

Now after 15 days I received mail saying my loan application is cancelled with the same 2 reasons also the cheque amount is debited from my account.

Now when I am claiming for my debited amount the executive is ignoring and refusing to Give my money back.

Very disappointing service from HDFC where they show false promises initially to the customers.their executives don't have proper knowledge then why they hired by HDFC.its like for each customer application they get some points and due to which they never concentrate or ready to understand the customer information.
I don't know where to complaint about this issue.i wrote a mail still not getting any response from them