You can disable the $10/month Voice Add-On at any time in your main Clearstream account. Note that disabling the add-on will also disable it for all your subaccounts.
Quick Steps: Settings > Plan > Add-Ons > Click the toggle beside Voice
In your main account, go to Settings > Plan.
Scroll down to Add-Ons, then click the toggle beside Voice.
In the pop-up, click Disable Voice.
That's it!
After you disable the add-on, calls to your Clearstream number will fail. You can re-enable it at any time from your Settings (more info here!).
If you have any questions about anything, just reach out to us via the purple chat button. We'd love to help!