We received an invoice but something is wrong.
For technical questions about invoices, such as:
We need more information before we can pay,
The invoice was sent to the wrong person,
There is a mistake in adding up the various amounts,
Can you send us a new copy of the invoice,
please contact us by email at email@example.com.
If you believe that we made a mistake with the contents of the invoice (for example: we charged you for equipment that was not delivered), please write to firstname.lastname@example.org.
In all cases, please mention the number of your test-box and the number of the invoice.