reply to ZsExperiment
Re: [Bill] Random "non-recurring charges" of $255.36 o Precisely. At this point any sane company would just remove the charge. There's a word for charging customers without a valid reason, and that is fraud.
ZsExperiment, I suggest mentioning words like "Public Utilities Commission" in your conversations with customer service. If this does not help, report them. The PUC typically does not look kindly on fraud.
Edit: You might mention this in the Comcast Direct forum, too. The folks there seem to have lines to people far higher in the company than you can get to through normal support. It's worth a try!