State Bank Of India [SBI] — I didn't get refund in my account

Address:

Ahmednagar, Maharashtra, 413711

I was purchase a product on amazon but for some reason i returned it. Amazon billing department has confirmed that they issued a refund to my bank account for rs. Rs.999.00 on[protected]. The amount should reflect in my bank account statement or credit card statement after refund date + 4 business days. The reference number for the refund is "[protected]".
But that was not happen i have also give complaint to the bank manager of satral branch, then also i didn't get my money back.
So kindly consider my request and refund my payment.
Attachment: mail from amazon.