IDBI Bank — Deducting payments without Notice, changed account type.

Address:

Pune, Maharashtra, 411001

My account is Student account with IDBI, camp pune. There is no need to maintain balance in student account, still IDBI started deducting my balances every month. When I called customer care, they told me it is a new policy of bank where saving account holder have to pay fine to the bank for not maintaining account balance to a minimum average balance decided by bank. My complaint is: 1- Why they changed my student account to a saving account? 2 - The deduction come without notice.