If you would like help with your particular issue, you should start a new post by clicking the "New Post" button on the top of the page.
In addition, please do include the proof of Hughes stealing data. I'm sure we'd all be interested in seeing this "proof".
When you power your system on, does the printer automatically turn on, as well? The printer could be connecting to some type of service.
Also, with a Netgear Nighthawk, there should be some type of traffic meter in the interface. It won't show each devices individual usage, but it will show total usage.