State Bank Of India [SBI] — Unaccountable atm withdrawal

Address: New Delhi, Delhi, 110058

I used my SBI international debit card in US at an ATM in Jan 2015. but the ATM did not allow the transaction and I did not get any money. i returned to India in Feb 2015. On March 2015 i got a message that the money from an atm in US has been withdrawn from my card. I must state that i was in India and this was a 2 months old declined transaction. I have filed a complaint in SBI but to no avail. they are not able to track the money neither do they have any explanation for this. I can prove that I was in India when the transaction from my account is shown to have taken place in US.