State Bank Of India [SBI] — charge dispute against unauthorized transactions

Address:

PHACHARIYA WADI,PANWADI ROAD,VADVA, Bhavnagar, Gujarat, 364001

Here i want solution for unauthorized transactions performed in my account on 15th may 2019. I got notification of this transactions regarding deduction amount only on my register mobile no. After that i block my card and by checking passbook found that these transactions perform are online net banking transaction. I am not using net banking and also the service (Itune) where the deduction done. The total amount of deduction is rs. 3400-/, that are in different part. The deduction amount goes to "itunes.com/bill" as i got from passbook entry. So for this fraud transaction check in system and make prevention for it and provide refund to me for there transactions amount.

Hope i got earlier response from sbi.
Thank you.