Canara Bank — amazon amount of refund

I am harinder singh my account no. Is[protected]. I purchased a new mobile phone from amazon in paid from debit card. The amount is 10893/but i cancelled my order in same day on 15 november 2018. The refunds for the same were initiated and successfully processed to my debit card and i got refund reference number for cancelled the order it has been about 5 to 7 business days yet the amount are not reflected in my account. I contacted bank customer sporrt. They are not able to locate the refund with these reference number are[protected] please solve the problem