Amazon India — forfeiting of refund money.

Address:

711302

On 22.12.2017 i have refunded one item ahich was purchsed from amazon and after receivng back the said item amazon has refunded the amount in amazon pay balance.

That thereafter on 22.12.2018 suddenly amazon has forfeited the balance amount of rs. 150.48 stating that the amount so refunded is a gift.

Now the question is that i have spent certain amount for purchasing a product and after that due to some bonafide reason i have returned the said product and after returning the said product can the seller say that the refund amount is a gift from the seller and can forfeit the said amount after certain time?