Amazon India — problem in getting my money back

Hello! My name is jaya singh i have purchased an item from amazon india but i have cancelled that product on 17 january but i have not received my money 538 which i have spent on it. When i asked amazon about it they said to me that they have already deposited my money in the account and due to some problem money has been not deposited by the bank in your account. Therefore i request you to solve my problem and deposit my money as soon as possible.