Canara Bank — refund of my amount of rs 2705

Address:

New Delhi, Delhi, 110068

On 31st july i have transact for one order place in amazon for a price of rs 2705. As the order was base on cod, i was paying to the delivery boy through google pay through an upi attached with my canara bank account #.2xxxxxxxx7196
The transaction through google pay of rs 2705 was made but the transaction was unsuccessful however the amount has not been refund till date.
Now the same has been stuck between canara bank and the amazon. I am unable to get a refund of my amount after 1.5 months also.