State Bank Of India [SBI] — refund from amazon not credited into my account

Address:

Tulsi Bihar Colony, Kalu Kuwan, Banda, Sindhudurg, Maharashtra, 210001

I returned a order in amazon, they refunded my amount into account but my amount I.e. 4799 rs is not reflected into my account. Amazon even gave me a reference no. Which is proof that they had refunded the amount but state bank not accepting their mistake. They are not providing a better suggestion that where is my refunded amount ??
Customer care of sbi is not accepting their fault.
Plz provide a better resolution so that I can get my money back .