Hi Michal, we'd be glad to take a look at your account in greater detail, and we are only able to investigate and escalate issues found on the Cox network. If you have traceroutes or other diagnostic info showing connectivity issues on the Cox network, please feel free to post them here or email us at cox.help@cox.com. In regards to data usage, Netforecast is an independent third-party that has also tested the Cox meter for accuracy. Here is a link with information regarding how different online activities impact data usage.
www.cox.com/.../how-online-activities-impact-data-usage.html
-Kevin M. Cox Support Forum Moderator
