State Bank Of India [Sbi] — unauthorized debit charges deducted

Why sbi deducted our 295 rupees 5 times (Total amount 1475) without knowledge of me.

To transfer chrg recvd-mandate fail txn dt.05/12/18bajaj fina 295
To transfer chrg recvd-mandate fail txn dt.31/12/18bajaj fina 295
To transfer chrg recvd-mandate fail txn dt.31/12/18bajaj fina 295
To transfer chrg recvd-mandate fail txn dt.04/01/19bajaj fina 295
To transfer chrg recvd-mandate fail txn dt.04/01/19bajaj fina 295

We have complaint about it to customer care and emailed to branch head but no response.

We requesting you, please refund our amount.