i am serving in state bank of india having three children whether it is halal or haram
It is unlawful to work in bank in which one is involved to write interest accounts. It is unlawful to receive the salary as well. You should keep on seeking forgiveness from Allah and look for any lawful source of income. Do not leave the bank employment until you get a lawful means of income.
Allah (Subhana Wa Ta’ala) knows Best
Darul Uloom Deoband