Canara Bank — refund not reflected in my account

I purchased a product on amazon on 5th of january month using my canara bank debit card same was not received and i asked then for refund. As per their confirmation refund was initiated on 5 th of february month maximum time frame was 5 days. Still it was not reflected in my account. They had provided the refund reference number as 954588. I had contacted your customer service number they is no proper response. Please check and confirm the status if your response was worst i'm going to file in banking ombudsman.