Indian Bank — my refund from amazon not coming

Address:	Ratha road, old town, bhubaneswar, 1551, 751002
Website:	Amazon.in

My refund is not coming. I contact amazon customer service they told me that your refund of rs.2910.00 has been processed successfully on[protected]. The amount should reflect in your account by[protected]. After 9th april i again called them and told them i didn't recive the refund, they told me your refund has been proceed successfully by us please contact your bank customer care. And also they give me the authorisation code (Refundreferencenumber[protected]. After this i called indian bank customer care they told no we didn't recive anything. And they just avoid me. My indian bank account number is[protected]. My amazon order number is[protected]