State Bank Of India [SBI] — deduction from saving account

There has been series of deduction from my saving account without my prior permission which left me with insecurity on my saving account under your bank.
Below are the messages i received after amount been deducted from my account-

Your ac xxxxx521538 debited inr 5.90 on 30/06/18 - mab sb debit. Avl bal inr 314.65. Plz download buddy

Your a/c xxxxx521538 has a debit by transfer of rs 206.50 on 03/07/18. Avl bal rs 108.15.

Your ac xxxxx521538 debited inr 11.80 on 31/07/18 - mab sb debit. Avl bal inr 1, 496.35. Plz download buddy