State Bank Of India [SBI] — don't get refund on returning the order.

My name is harsh kumar and i had ordered headphones of rs.479 in amazon on 11 december, 2019 and after 18 december, 2019 i returned this order due to personal reason and on 18 december, 2019 amazon initiated the amount to my account but i still didn't get the money. Amazon sent me this reference number[protected] and told me to fill charge dispute form but state bank of india doesn't have such policy. So please kindly respond to this complaint it's very urgent. My account number is [protected]. Thank you sir