HDFC Bank Securities — money deducted

Address: 600113

I opened my hdfc salary account in hdfc ramanujan it city chennai branch. While opening my salary account they automatically created my demat account saying that its compulsary and only one time charge is there (1000 deducted at starting).
885 amount was deducted from my savings account on 10th nov 2017 as charge for my demat account. But at the time of opening of account hdfc person told that this account is lifetime free for it employee and no charge will be there in future. Now they are saying that its a amc. They gave me the wrong information that its lifetime free for it employee. Now when i am going branch for this they saying money cant be refunded, they told to close the account. I have also taken personal loan.
I also didnt use demat account.
So i was given the wrong information at the begining, please refund my amount.