Amazon — Refund is not reflected in my account

My name is Archana M. I had ordered a earphone of Rs.599(realme buds 2) in Amazon on February 10 using my Canara Bank debit card and I returned this order due to personal reasons. On February 15 Amazon initiated the refund amount to my card but It still didn't reflected in my account. Amazon sent this reference number 74332741042104173808604 and told me to fill charge dispute.