I want to extend my free trial. Whom should I be contacting for help in regards to extending the trial license.
There is ^not an option available to extend SaaS free trial. After the 15-day free trial period, you will continue to have "Lite" access. See documentation for details:
When you "contact us" using the link @Ryan.Paredez provided, you will be connected to our Sales team who may help you further discuss options for purchasing licenses.