State Bank Of India [SBI] — deduction o[censored]nnecessary charges on my savings account

Address:

786171

Though my account balance was meeting the requirements of the minimum balance of ₹3000 and i haven't done any transactions recently yet they are sucking out money from people for unnecessary reasons, looks like even keeping money on the trusted bank like sbi isn't safe these days. They are the dacoits who has been granted by the government, disappointing sbi. I want reason on what basis they have deducted such a huge amount. Also i am attaching another message where they have deducted ₹300 from me. Had it enough this is too much.
Message 1: your a/c xxxxx385151 has a debit by transfer of rs 147.50 on 22/01/19. Avl bal rs 2, 940.50.