Amazon — Automatically debited amount of rupees from my Bank account.

Address:	Amazon india pvt ltd.
Website:	Www.amazon.com

I would like to state that, Amazon has debited an amount of Rs 999/-from my ICICI bank amount with out any prior notice or relevant reason.
Hence I need a clear information as to why this huge amount has been deducted even When I didnot purchase anything. kindly resolve this issue

Regards:
Dinesh Borah
[protected]