[Resolved]  HDFC Bank — negative balance

My hdfc salary account is not in use since 2013. I had gone to the bank to close the account as i was getting regular mailers on my postal address. But to my surprise, i was told that i have negative balance.
Before this incident also, i had salary account with hdfc and icici bank but on leaving the organisation, the accounts were closed on their own so i never bothered but this time it was really discouraging to see negative balance. I complained and since i was leaving out of the station, i was told i would be intimated once the details have been worked out and now it has been 4 years i am still getting mails and it is bothering me now.