Axis Bank — Axis Bank Negative balance in Saving account

My axis bank savings account has turned negative of 16 thousand rupees because of non maintenance of negative balance.
When I raised the question with Axis bank customer care they that In RBI website it is mentioned "It should be ensured that the balance in the savings account does not turn into negative balance solely on account of levy of charges for non-maintenance of minimum balance."

But they are not responding properly have been chasing up with them for more than a month now, Please help.