Bank Of India — minimum balance debited my mother account in lockdown period

Dear sir

My mother account running to bank of india. Coimbatore dist ramanathapuram branch tamilnadu.
As per govt intimation lockdown period end any other charge debite. But suddenly debited my mother account minimum balance charge. Mother account details
A/c no: [protected]
Ifsc code: bkid0008150
Mother name is r. Anandhi
Customer id:[protected]
Bank name : bank of india
Branch : ramanathapuram branch