Kotak Mahindra Bank — Regarding deduction of TBMS charges falsely

Address:

Mumbai City, Maharashtra, 400708

Hello,
I am a customer of Kotak Mahindra Bank having an account with CRN :[protected] .
I had opened an account in September 2016 through the Bank’s representative in my company. At the time of account opening they informed me being a Salary Account I can have zero balance or otherwise maintain minimum 10000 balance in account and i did that.
But this month, I have been charged for TBMS without prior information. Also, no message post deduction of amount from my account.
05/02/2017 Chrg: Min Bal Non Maintenance Charges for Nov 16 TBMS – Rs.977. 50
05/02/2017 Chrg: Min Bal Non Maintenance Charges for Dec 16 TBMS – Rs.977. 50

When I contact customer care I was told that I have to maintain a minimum balance of 50, 000 every month. How can be they so irresponsible. The same was told when I visited the branch in airoli .Also, they told me that they don't have direct contact with their Bank’s representative in my company than tell me where should i go?Why there is ambiguity?
Why I was not informed this during the time of account opening? If was informed in the first place I would have maintain the amount. I want to know that why they didn't tell me before about this thing. Representative in bank also told that deduction for the month of January month will also happen. Why the hell I am not getting any messages regarding such information.
Such a big fraud from Kotak Mahindra Bank. I am demanding an explanation right away, because I am frustrated with the service which you are providing. Which sort of service is this.
I strictly need my money to be back in my account. Planning to take this issue to higher level and will going to close my account. It’s the fault on bank’s part so why should I pay for this?