One97 Communications — money withdrawal

Address:

New Delhi, Delhi

Hi, i have a serious problem.
I recently checked my passbook and discovered a couple transactions possible not made by me.
One97 communications has withdrawn money from my bank account several times.
Here are the dates transaction and amount. (Bank of india)
1. 03/10/[protected]
2. 20/02/[protected]
Please tell me, i haven't done any transaction with them and guide me steps to recover the amount.
I am a student and it is hard on me for unintended money being deducted.
Thank you.