SBI — aiims exam ug form online

When i try to fill aiims exam undergraduate (Mbbs) but payment failed due to some issues i don't know but i pay 1500 inr for filling aiims exam ug form online and my payment not goes to aiims they write payment unsuccessful due and money deducted from my account of 1500 from (Pnb debit card) pnb debit and not return and gave tracking id cpn8125986 when i complained to branch they said i can't do anything. So pls how can get our deducted money.