Canara Bank — money debited on online payment through debit card but not credited in merchant account. and the refund is not credited even after 7 working days

I was making an online recharge through freecharge using debit card (Rupay) for an amount of rs.449. The transaction was failed but money is debited from account and not credited in merchant account. It has been more than 7 working days still not got the refund. When i called customer care of canara bank they told me it will take 45 days to get refunded
My phone number is [protected]
And transaction amount is rs.449
Name :niyas. E
Date of transaction: 14/05/2019
Branch name: kondotty, kerala