We definitely understand the importance of managing your services, and we can certainly try to assist you.
The best method if you are trying to block all services to a device is to suspend the device.
Instructions on how to suspend a device can be located here: https://www.verizon.com/support/suspend-service-faqs/
Under: #2 How do I suspend or reconnect service to a line on my mobile account?
Please let us know if you run into any issues.