Thanks for posting and welcome to the community! What price did the salesman quote you during your initial sales call?
Concerning your data issues, I see that you have multiple streaming devices connected to your system that are using the majority of your data. Please keep in mind that streaming is a very data intensive activity, and doing so will use up your data allowance quickly. Watching movies or TV shows uses about 1 GB of data per hour for each stream of standard definition video, and up to 3 GB per hour for each stream of HD video. On your current 10GB plan, your data will likely not last you the entire month when streaming regularly.
We're closing this thread since we never got a reply from you. If you still have concerns, please start a new thread and include a detailed explanation so we can more effectively help you.