"3 people from hughnet that the top three lights means that data is being used but since I didn't have a wireless router hooked up they couldn't explain why this is going on"
Three tier one people couldn't explain what is going on.
The Modem itself is in constant communication with the earthside Gateway facility. Whenever there is activity between your Modem and the Gateway the transmit and receive LED's on the modem will flash.
That activity can consist of "overhead" communication or it can also include activity from any or all connected devices.
"overhead" activity in NOT CHARGED AGAINST YOUR ALLOWANCE but your connected device activity will be deducted.
" I said before I don't know how to do screen shots from my computer."
Every Windows based computer starting with Win Vista and including Win8. 8.1 and Win10 has a built-in screen grab tool called "Snipping Tool".
Here is a link that will show you how to find and use Snipping Tool on your computer:
Again, just because you have LED activity does not mean that the activity is being charged against your data allowance.