IDBI Bank — my refund amount is not credited in my account

Address:

Wz21 Nangali zalib janakpuri east, Wz21 Nangali zalib janakpuri east, New Delhi, Delhi, 110058

Sir/ma'am
Please check my refund amount 289 is not credit in my account.
Maine 15/08/2019 ko amozon ko pay kiya tha product purchase ke liye aur product sahi na hone par maine19/08/2019 ko claim kiya aur amozon ne uske alternative refund amount provide 29/08/2019 tak karne ko bola but refund amount 289 is not credited till date.

My account no-[protected] and
Customer id[protected]

The authorization code (Refund reference number) for the transaction is zb1yptvg0000jz84l8xp.

Thanks & regards
Mrityunjay kumar saroj