Please note that this guide only refers to resellers accounts.
As a reseller, you have the ability to terminate/cancel your customers’ accounts should they not require the service anymore. This can be done by following these steps:
In the search field you can type in “list accounts” and select the option that’s displayed below:
Expand the options on the left-hand side of the account you wish to terminate:
You should see the option to terminate the cPanel account now:
You will be redirected to a page to confirm the termination:
As soon as you confirm this, WHM will remove all records of the domain(s) linked to that cPanel account.