Vodafone India — Amount got debited in account

Address:

Mumbai City, Maharashtra, 400096

I have installed m-pesa on my mobile and made some transaction on 25/07/16 using my debited card linked to my icici saving account. very next day about 2:23 pm i got an message showing that "you have used your debit card linked to account number_ for a transaction of inr 2000.00 info. vin*vodafone-bi", but i did not made any such transactions. and also i did not get any call for asking details of my debit card, pin etc still amount is debited to my account. hot is it possible?.