Thanks for reaching out about your situation, @Kruger .
Have you had a chance to speak with our Live Support team regarding your tax issues?
If you believe that Shopify is incorrectly calculating your store’s sales tax, please get in touch with our team so that we can authenticate you against the correct store in order to take a closer look at your tax information from our end. You can use this link, which will take you to the login page of our Help Center so that you can start the authentication process.
Our Live Support team can help look into the matter in more detail and, if required, get in touch with our internal Taxes team on your behalf for further assistance.