Same here. There was another thread were many people were complaining of this, but a comcast admin locked the thread.
We never use over 500Gb a month. It's usually around 350GB-450GB.
But this month (for the first time ever in 7 years being with comcast) their metter is accusing us of using 1,700GB.
We've haven't added any new devices, not used anymore interntet than usual, and I can see that only our devices are connected. I have ran virus scans & Malwarebytes scans on all computers, and they are clean.
It seems for me that all this started not long after I received the email that they were upping our download speed for no additional cost.
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