Xbox One Bandwidth Usage

Has anyone metered their bandwidth usage from the One?

The reason I ask: I have the 30GB HomeFusion LTE Broadband service from Verizon. I have exceeded my allotment and I'm now paying by the GB (I have turned it completely off).

I have noticed the following bandwidth usages since install and I have not used video on demand:

On the first day, I used 6.8GB.

It seems when I install a new game, I'm getting massive downloads (for patches).

Any help would be appreciated!