Billing is only available to the Administrator user created at signup or Users with the "Billing Admin" role assigned.
If you do not see the Billing page in the Settings menu, you do not have the necessary permissions to manage payment information. Contact the person in your organization who manages your UniTel Voice account and request they update your login with the needed permissions.
To change your Billing information please follow these steps:
1. Click the "Settings" icon.
2. Click on "Billing".
3. Click the "Edit" button to the right of "Billing Information".
4. Enter your new billing information and click the "Save" button at the bottom of the page.