ICICI Bank Ltd
Acoount is debited without any information

I have saving account with ICICI Bank Ltd, Ground Floor, 239/1 AA, Kanika Hotel, Civil Lines, JHANSI, 284001. I deposited some amount in my account and the counter man checked my amount. On 26th September the bank debited my account with Rs. 500/- with out any information and when I visit my branch they told me that while I deposited the amount there is one false note in the bundle. But I say that when the counter man checked the bundle then why he not told me and how I imagine that its my note. Futher I ask to show me note they told me that they distroyed the same. I am not satisfied with their answer. So kindly help me.