Amazon — refund issue 854629

Address:

Palakkad, Kerala, 678006

I have returned one product in amazon.in #[protected].. They have initiated refund on dec4. But the same is not credited in my bank account.
When i contacted syndicate bank they are also not giving proper response. Refund amount 4200.
I have raised charge dispute also. But still no proper response for the same.
When i contact amazon they are requesting to contact bank customer care.
Refund reference number 854629
Can you please take complaint against the same.