Canara Bank — money not refunded into bank account no[protected]

I have booked flight ticket on 16th of march from paytm and paid rs 6293 from my account. After somedays i cancelled the ticket but the money which they refunded after cancellation hasn't credited in my account yet.
Account no:[protected]
Name-niti agarwala sahu
Kindly look into this matter asap as its been nearly 3 months i have been waiting for my refund.