Kotak Mahindra Bank — amount deduct without any transaction

I open my kotak application then i found my a/c blnc is showing 434inr but it should be around 550 i see my transactions but i won't see where these 120+ rupees amount gone?? Is it a scam or fraud?? Help because my transaction history doesn't shows this deduction what will i do next please help in finding what is that! Without text and any details i guess its low bank services to customer's