Alright, here are some of my experiences with Comcast's evilness (not including the "normal" and endemic DNS hijacking, Bittorrent and Netflix throttling, and secret data cap issues that Slashdot has reported on, of course):
1. I called up Comcast to negotiate my rate, and the customer service rep offered me $19.99/month (for I think 20Mbps internet). When I got my first bill, it was for $60+. I called to complain, and (after escalating to a manager) was basically told that they did not offer such a rate, that I was a liar for claiming to have been offered such a rate, and that they refuse to go listen to their own recording of the phone call (which would have proven that I was correct). Once I filed the BBB complaint, I was contacted by somebody higher up in Comcast (some kind of VP... it was over a year ago and I'm going by memory) who said they'd reviewed the recording of the call and would honor the rate for one year. Then, after 6 months, they jacked up the rate again, so I filed a second BBB complaint to get them to finish honoring their original agreement.
2. After that previous rate had ended, I changed my plan to a $39.99 plan that included Internet + basic cable TV (because Comcast is so desperate to inflate their TV subscriber numbers that they often offer that plan cheaper than Internet by itself). I refused to let them give me a cable box, opting instead to use my digital-cable ready TV's built-in QAM tuner instead. Then my PERFECTLY-GOOD built-in tuner stopped working, because Comcast decided to start encrypting the signal (which is nothing more or less than a blatant power and money grab, to force people to use set-top boxes and drive business for 'on demand'). Of course, Comcast will tell you the government forced them to do it -- trying to conflate it with the over-the-air digital transition -- but that's a big fat fucking lie. Long story short, I ended up filing the following FCC complaint:
Per FCC 12-126, Comcast is required to provide free set-top-boxes (STBs) OR CABLECARDS (CCs) to those affected by basic-tier encryption. However, Comcast appears to have a systematic corporate policy of making it as difficult as possible to obtain a CC, including lying to customers.
1. Comcast began encrypting WGTV weeks BEFORE sending the notice required by Title 47 SS. 76.630 (a)(1)(vi)
2. Service call technician would not admit that encryption caused the WGTV outage but only told me to use a STB
3. I called to request equipment compatible with my HTPC (without specifically asking for a CC). The rep insisted that Comcast did not support non-TV equipment, and that the only thing available was a STB
4. Comcast mailed me an unsolicited and unwanted STB
5. I called to request a CC (and return the STB). Several reps and supervisors insisted variously that a) unlike STBs, CCs could not be mailed (CC users are 2nd-class), or b) there would be a monthly fee (variously $5 or $10) for using a CC
Once I eventually obtained a CableCard -- which required physically going to a Comcast office, and was such a painful experience that I started yelling at the service rep and almost got arrested by the county sheriff's deputy that Comcast apparently employs to keep the peace because their customer service is apparently THAT BAD! -- I found out that having the CableCard actually entitled me to a discount vs. having the "free" set-top box. In other words, 1. the "free" set-top box isn't actually free, and 2. Comcast overcharged me for the several months between signing up for the plan and getting the CableCard registered on my account.