Canara Bank — refund not received in the canara bank account

Address:

#1, 7th main, 10th cross, Hari layout, Jnanajyothi nagar, Ullal main road, 560056

Dear Sir/Madam,

I, Nagaraj HB, Canara Bank SB account[protected], i purchased a product on Amazon which returned and refund was initiated by Amazon on 12th August and the refund should have been reflected in my account by 20th August. when spoke to customer care of Canara bank they were non cooperative with this respect.
Amazon has refunded the return amount of 2, 309/-
The Authorization Code (Refund Reference Number) for the transaction is YIA32TBX0000JYFCQTCB. Requesting you to Kindly resolve the issue at the earliest.