State Bank Of India [SBI] — refund has not been reflected to bank account

I ordered an item at amazon. Prepaid at the rate of 354. But that time i cancelled it too. As it was cancelled i should have received the refund. But i have not. When i did contact to amazon customer care they told me that the refund had been initiated successfully and it would be reflected to my account by then. But which was not. And when i again contacted they provided refund reference[protected]
And suggested to contact to bank customer care. Which i did and i was told that either amazon or home branch can help me on this issue.
But when i went to the home branch the manager told he could do nothing for me. And again i came to amazon i was told to charge a file dispute against bank.
My ac no -[protected]
Ifsc-sbin0014066
Mo-[protected]
Please help me..