State Bank Of India [SBI] — Refund amount initiated but amount not credited to my account

Sir, Actually i ordered a bluetooth name modernista power bass 200 wireless bluetooth on 19-oct-21 it is delivered and returned it back due to damaged peace has been delivered. I return the item to the amazon and initiated my refund. Amazon said that we initiated your money on 25-oct-21 to your bank and here is your reference number[protected] they give this number to me.
Im called the customer service of amazon, Sbi but i didn't get back money to my account. please help me to get my money back.