I appreciate the information, but I also believe that troubleshooting in the manner that you have suggested requires a level of technical network expertise that is above the capability of the average consumer. Comcast is poorly serving its customers in not explaining why so many customers are receiving false readings on their usage, nor offering any remedies for this problem, or even suggesting programs or apps that would address this problem without requiring significant IT expertise.
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I am having the same problem with incorrect data usage reports. Comcast is claiming that I used 70 percent on my 1024GB data allowance on November 12, an average daily rate of almost 60GB! This is absurd since I am the only person at home the whole day (my two sons are at school and my wife works) and I do not use the internet for anything other than reading news on websites. And then I received an advisory on November 15 that I had used 80 percent of my allowance, followed by another advisory on November 17 that I had used 90 percent of my allowance. 50GB per day of data usage? I'm guessing that such a level of usage could only be reached by several people spending 10 plus hours per day of HD streaming.
And although I didn't think it through until I encountered this thread, Comcast also claimed that my October data usage went from 90 percent to 100 percent in only two days (from Monday to Wednesday), another alleged usage of 51GB per day.
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