IDBI Bank — refund amount not received

Address:

Tamil Nadu Hosur

This is regarding refund amount of ₹1498
which was processed by Amazon on April 2nd 2020.
But, till now it has not reflected in my a/c.Iam not getting proper response from bank staff nor from IDBI customer care .I hold an account in IDBI Tamil Nadu Hosur branch.
I hope my problem get resolved through this
Complaint.please help me.

Iam providing my a/c details.
Shobha Hari
IDBI Sb a/c no [protected]
Customer id 73577184
Ifs code IBKL0000213

My refund reference number is384588