Bank Of Baroda — I am not getting refund

I ordered a product from Amazon on 23rd June 2019. I paid 5000 rs through DC. Later some personal reason I have to cancel that product. The refund is initiated by Amazon but i am not getting it yet. They gave me The Authorization Code (Refund Reference Number) for the transaction is 210501. Please look on it the refund amount is 4000. They said it'll take maximum 4 days but still I'm not getting refund