Canara Bank — charges disputes form

Dear sir
My Account No[protected]
BGS Branch. Health and Education city. Bangalore
Customer Id[protected]
I have purchased a product on Amazon 14/12/2020 using my Canara Bank debit card. Same product was returned and I asked for refund As per the confirmation refund was initiated on[protected] expected credit amount Rs 969 on[protected]. Still it was not reflecting on my account . They have provided a Refund reference Number - 74332740354035304812921. I have called customer care there is no useful inform. Please kindly rectify my issue as soon as possible ... I am expecting my amount to my account no.
Thank you