[Resolved]  HDFC Bank — account is locked

I want to unblock my account.
Dur to some unauthorised transactions, i had to block my hdfc bank account.
The customer care executive says to get it done at the nearest hdfc bank and the bank says to get it done by the customer care.
I have called the customer care several times and all they do is transfer them, put the call on hold and eventually the hung up without resolving the issue.
How am i supposed to unblock my hdfc bank account.