HDFC Bank — My salary account

My salary account was created by my company. I left the company in march 2017. Due to this i dint maintained the minimum balance in my account even the balance left is also deducted as penalty for non maintenance of minimum balance. I am not working anywhere. I am not using credit card, debit card even then my account balance become -1061. How they can do this to non used account. How can they impose penalty. I am not working anywhere and there is no any source of income
I can not pay this negative balance.
I request to hdfc bank please close my bank account.