refund (some money) to (someone)
To return the money spent or invested by someone. The automaker has been directed to refund payments to all of its customers following the discovery of defective parts used in its anti-lock brake system. They would only refund half the money to me because I had already taken the tags off We'll send you a notification when the money is refunded to your account.
refund something to someone
to return payment for something to someone. I insist that you refund the money to me at once. Her money was refunded to her by the store as soon as she asked for it.