State Bank Of India [SBI] — Refund initiated the refund but amt was not credited into my bank account

Refund was initiated by amazon on 9th november and the expected credit date is 14th nov but the refund was nt credited to my bank acnt. Amazon has provided the refund reference number 159281 . Order id is[protected] n the amt to credited is 406.4 rupees. Plz check n help me credit the refund amt soon into my bank acnt .