State Bank Of India [SBI] — refund amount not received from amazon

Address:

Kolkata, West Bengal, 700010

My self Mithun Das I am a SB account holder of your branch my account no is -[protected], IFSC Code is –SBIN0001798 address is 43/H/18 Chaulpatty road Kolkata 700010. I bought a trouser from Amazon on 25/05/19 but due to some reason I have returned the same to Amazon on 26/05/19.
I received a mail from Amazon on 28/05/19 regarding this refund, they have confirmed that the returned process have been done successfully and the amount should be credit to my bank account by 30/05/19. The refund reference number for the transaction is[protected]. But unfortunately the amount hasn’t been credited to my SB account No-[protected].
Therefore I would like to request you kindly do the needful and resolve the issue at the earliest.