Canara Bank — refund amount are not credited in my account

Address:

Gopalganj, Bihar, 23010

Raju kumar gupta
sub-refund amount not credited in my account
refund amount-3000
refund by-amazon
refund reference no[protected]
last refund date 24.10.2018

i have contact with Amazon customer care they say that your amount are refund in your bank account.many times i have contacted to bank customer care they are not responding and cutting the call.I have needed my amount. Plz, help me as soon as possible.