All CA bundles come as standard with the SSLs when they are installed using the automatic methods. Also, they should exist and be updated automatically on standard cPanel and Plesk servers as well as other leading web hosting control panels.
However, in some cases, you may need the separate CA bundles for the certificates to install manually. The Intermediate CA bundles can be downloaded directly from the issuer's website:
GeoTrust: https://knowledge.geotrust.com/support/knowledge-base/index?page=content&id=AR1422
If you have any further questions on CA Bundles please get in touch with support here.