Canara Bank — Debit of rs. 9470 from account without any intimation

Address:

Vadodara, Gujarat, 390023

Received text massage on my registered mobile of debit of Rs. 9470.
This deduction was did without any intimation. When I approached my service branch, they informed me this deduction is interest difference and found during audit. My question is only that my OD account was created in the year 2012 and audit of bank is generally carry every year. These mistake was made by an employee of bank, second mistake was did by auditors and third mistake of branch that have not informed me about this deduction.
Regards,
AG Patel
M +[protected]