Canara Bank — havent received my refund

Address:

75/A opp ingle hospital ghorpadi gaon pune 01

I ordered a product from amazon in the month of march before lockdown and before receiving the product there was lockdown so I canceled my order and asked for refund, the customer care of amazon said that ill get my refund by 13th of April but I didn’t.! So i called them again to enquire about it so they said the payment has already been refunded to you so you need to enquire about it in you respected bank i.e canara bank or else fill a charged dispute form .!