Uco Bank — Balance deduction without reason

Address:

711401

Got 2 strange messages on 19th of this month-
"your account 0819xxxxxx8795 has been debited with rs.823.08 by transfer. Available balance in your account is -402.73" - 10:55am
& then
"your account 0819xxxxxx8795 has been debited with rs.420.08 by transfer. Available balance in your account is .27" - 11:12am.
I contacted my branch next day.
One of the so called busy officer (Identity unknown as they are on seat without any identity or name) told me that i shop online twice that day.
I askd him that how that could be possible without any otp in my mobile.
He roared & ordered me not to argue, i shopped, amount deducted & nothing can be done against that.
I obeyed that gentle man.
Went to the branch manager then.
He viewed my passbook & said that amount been deducted as the bank service charge as i use the online system of the bank. I said that i never been warned about this & i am deducted by additional charges by bank whenever i pay for something.
He told me that he had given my answer, he was busy, not to disturb again & diposit amount in account.
As far i know by enquiry with other banks there should have no additional charges for using this service.
Now i am confused & very anoxious myself.
A 10 rupees means a lot for the starting of my little business.
Therefor i deffinately waiting here for a positive action against my helplessness.
Details are given below.
Thank you...

Name:- sk sahabuddin
Bank name:- uco bank
Branch:- amta
Branch address:- amta, howrah, wb, india.
Pin:- 711401