When a refund is complete, a billing document confirms it. You receive it by email, and it's also in the client area. Depending on the original invoice, it's a credit note or an adjusted invoice.
The document shows the amount refunded, the original invoice and the date the refund was completed.
When it is issued
The document is issued once the refund is complete, not when you ask for it or when it is approved. It usually appears shortly after the refund reaches your original payment method.
Where to find it
Log in to the client area, open Financial and open the invoice or credit note of the refunded service. You can download it for your records.
The full terms are in the Terms of Service.