Refund process:
1. The user initiates a refund with the merchant.
2. The merchant processes the refund.
3. THPay receives the refund from the merchant.
4. THPay refunds the user.
5. The user receives the refund.
Refund process:
1. The user initiates a refund with the merchant.
2. The merchant processes the refund.
3. THPay receives the refund from the merchant.
4. THPay refunds the user.
5. The user receives the refund.