Delete RingCentral App Account
If you would like to delete your account but other people from your company will continue to use the RingCentral App, contact one of your company's administrators and they can remove you. Click People in the left pane, then select Admins from the Show list at the top of the page to see the list of administrators.
If you would like to remove your entire company from the RingCentral App, and your company has a subscription to one of RingCentral App's paid plans you’ll need to contact customer support to have your company removed.
If you're an admin, click People in the left pane and click on the gear menu next to the person you want to remove. You'll see an option to deactivate them there.