Indian Bank — I am complaining about refund not credited

Address:

Chennai, Tamil Nadu, 600120

I cancel the order in amazon and he refund the intiate me on Jan 9 2019, and he send me mail and refund reference number[protected]. But still I did not got my refund, I call Indian bank customer care he telling call and ask the refund in amazon, amazon customer care tell me I send the money to your account and send reference number to your account. You ask Indian bank like that. What to do.