HDFC Ltd - Loan not given

They had taken **** INR on the surety of approving my case. I request RBI to help me out this I'll practice to harras the customer by HDFC. I understand that its a minimum processing fee. But it's viable to take this fee when the loan has been processed. Just via looking over CIBIL we can't say it as a "processing". I have kept bank ombudsman copied in this email and request the BO to help me out in such cases.
Being in the corporate sector, I understand there are several costs associated with the processing of loans such as
Travelling of bank resources to the site
On-site verification of loan applicant
Other viable utilization of resources
The file has not reached any of the above stages I mentioned.
Lastly, my file has been taken on the grounds of successful processing of my loan and same was committed by HDFC employee and I also told him that to only take money or file from me if there is an assurance I have shown all of my previous credit histories with CIBIL score as well. How would someone give ****/- just to reject the file? I was been informed that these charges will be deducted only after the successful approval of the loan file only. Same practise has been not followed by any of the competitors while my father was applying for a loan with other providers. They have duly returned the cheque(s) for minimal processing fee. On the grounds on said information, I had signed the docs. This is not a good sales practice. It comes under cheap and money minded activities. It's not good to take the amount with the assurance of giving the loan and then rejecting it. I request you to take my file forward and sanction the loan or simply return the amount. I request BO to help me in this regard.