HDFC Bank — amount deduction

Address: Gautam Buddh Nagar, Uttar Pradesh, 201301

Website: hdfcbank.com

Written an mail to hdfc bank and they said someone will be in touch with me within 2 working days.
I have written the email on monday but still there is no respinse from the bank.
The way they are handling the complaints is not accepted anymore.
Only they are giving a new subject line to mention in every email like[protected] and all. Till date i have got three subject line but there is nothing in regards with the complaints which was registered.