My monthly uses were 300 -400 GB March - Aug. Between Sept 01 and Sept 15, 2019 my usage mysteriously jumped to the limit: 1,024 GB, the Terabyte limit. There was not any change in my lifestyle or cable useage in September. After many calls to Comcast and one site visit from Comcast I received a verbal commitment from Comcast over the phone, on Sept 19, 2019, to initiate an "Escalation" with an accompanying "Reference Number". They said they wouild contact me in less than 72 hours. Between Sept 16 and Sept 19th my Netgear traffic meter states I have used 19.63 Gigabytes. Comcast's web page (Devices) says I've used 200 Gigabytes during that same period.
If you live in California, the telephone number to address "disputes" with the California Public Utilities Commission is 1-800-649-7570.
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