State Bank Of India [SBI] — Unauthorized deduction form personal account

Address:

505, Gold star appartment, Zanzarda road, Opp. Jogi petrol pump, Near Eklavya public school

On 29.10.2021 unauthorized transaction of Rs.20, 000/- Done from my father's personal account.

Particulars:
[protected] Rupay WDL TXN @KO 1A7
[protected] OF NICT TECHNOLOGIES PVT AT 10521 DAU, RURAL BANKING, GIT, MUMBAI.

As this transaction is not initiated by us we want full refund of this amount.
Also we would like to know how this has happened and how to prevent such transaction in future.

Waiting for your prompt reply.

Thanks and Regards
Tajagna