State Bank Of India [SBI] — refund amount of 1534

I made a transaction of 1534 ru. Through amazone site to pay electricity bill. The transaction was failed two times and amount is deducted from my bank account. I didn't receive credit amount of refund yet after resolution of complain no. [protected] and [protected]. The refund reference no. Given by amazon is 264227. I also made a call to my sbi home branch and they told me that there is not any kind of information related to my refund amount in my account history and i also checked my bank balance through internet banking.
The amount of 1534 is debited from my account is 2 times.