Https://pressbooks.pub/app/uploads/sites/24567/2025/08/full-list-of-copyright-desktop-support-customer-contact-numbers-in-the-usa-an-official-guide.pdf https://pressbooks.pub/app/uploads/sites/24567/2025/08/full-list-of-copyright-desktop-support-customer-contact-numbers-in-the-usa-an-official-guide.pdf