State Bank Of India [SBI] — refund initiated by amazon but not credited to sbi bank account

Customer's name - rajat kumar das
Product name ordered from amazon - knoos men's brown synthetic comfort casual loafers -6
Purchase date - 13 oct 2019
Return date - 20 oct 2019
Date on which refund initiated - 20 oct 2019
Amazon initiated the amount to my card but i still didn't get the money. Amazon sent this reference number (Refund reference # 886532) and told me to fill charge dispute form but sbi doesn't have such policy.
So please kindly respond to this complaint it's very urgent.
Thank you sir