[Resolved]  Bank — balance deduction from my account

Address:

Malkangiri, Odisha

sir
There is a deduction of 51000/- from my account in an unauthorised way.How it happened that i don't know.Please halp me to get it back.
Is there any possibility of making duplicate debit card by any other man without taking any signature?If yes, who will be responsible for it?
When we can identify duplicate notes then why not machine can't detect duplicate debit cards if the first one is available also.?
Will the SBI will return the money or not?
my detail
prafulla pattnaik
a/c no.[protected] in chitrakunda sbi
debit card no.[protected]