I extended support for Halo Themes because I needed their help on installing an update.
They replied that support does not do this and that I need to cancel the support through Theme Forest and pay them a fee instead to do the install.
How do I cancel the support through Theme Forest?
Thank You 
Hi @SLEnterprises,
You can request a refund here.
Thanks
Thank You so much for your help. 
I paid for the support on July 3rd and requested a refund a week later when I realized the support was not going to cover what I needed.
It is now nearly 4 months later and I am still haggling with Halo Themes and Envato Market trying to get my refund.
Unbelievable! 
Hi,
if the author does not respond to the refund request within 7 days, you will be given an option to raise a dispute with Envato. This option should appear automatically as a link or button on the refund request details page after 7 days.
Thanks