Kotak Mahindra Bank — Deducting the money from the account without any intimation

Address:	Hyderabad, Andhra Pradesh, 500034
Website:	www.kotak.com

Kotak mahindra bank deducted my money about INR 2932 for non maintenance of minimum balance with out any intimation. I did not get any assistance from their end even after raising a complaint also, instead I got irresponsible answers from the Tanvi Mehta service officer of Kotak bank contact number: [protected]. And now she is not ready to answer my calls also.
please arrange my refund from the bank.
At least I need perfect explanation from the bank to my deduction.