refund
US /ˈriː.fʌnd/
UK /ˈriː.fʌnd/

1.
remboursement
a repayment of a sum of money, typically to a customer who is dissatisfied with goods or services bought.
:
•
I asked for a full refund because the product was defective.
J'ai demandé un remboursement complet car le produit était défectueux.
•
The store offers a 30-day refund policy.
Le magasin offre une politique de remboursement de 30 jours.