HDFC Bank — Already paid emi but bank not responding

Address:

New Delhi, Delhi

I am having a Car Loan and a Saving Account with HDFC Bank.
Auto Loan A/c No. 19426959
Saving A/C no. [protected].

I received a letter from your bank dated 16th Nov., 2015 that due to 1 bounce installment (Month - July, already paid via receipt No.[protected] on 16th July, 2015) my Saving A/c will is been holded and for assistance i can contact Mr. Sumit R. Rastogi from HDFC Bank.
I was already in touch with Mr. Rastogi earlier and he already knew that all my installments are been payed properly and the installments which bounced were already cleared by me, so he assured me that my holded funds will be cleared soon and will be transferred into my A/C soon.
But,
instead of release of funds, my Saving A/c was debited by Rs. 7027/-, i reported the same to Mr. Rastogi but after that he is regularly ignoring my calls. I mailed the same to HDFC senior officials via mail, i got the reply that all my payments are clear and the letter stands VOID, but funds didn't came back to my A/C. Also, I was given the number of Some Mr. Vineet Puri, but he is also not responding.
I the mean time I also visited your ITO branch to meet Mr. Rastogi and at that time he told me that he had already mailed to his some "CENTRAL TEAM" but they are not responding on my case.
Now, because of all this case i am facing problems i.e.
1. Unable to go for foreclosure.
2. Unable to sell my car and switch to new car.
3. My car is already 1 year old and depreciation value is been increased because year has changed.
4. My CIBIL score has gone down.
5. Unable to apply for HOME LOAN and Credit Card.

Further, I would like to tell you that bank has left me with no option other than no further installments would be paid till the case is resolved and the fund is been transferred to my Saving A/c and to escalate the case to OMBUDSMAN and to consumer court.