Canara Bank — Refund from bank

Address:

Infront of maheshwari bhawan,nokha bikaner rajasthan.

Dear sir,
I purchased a product on Amazon on 4th Oct 2021 using my canara bank debit card, that product was not correct so i returned it, and i asked then for refund As per their confirmation refund was initiated on 19th oct 2021 and today is the 29th oct 2021 still it was not reflected in my account.They had provided the refund reference number as[protected].i had contacted your customer service number they is no proper response hence i mail you.