Misleading customers through false advertisement and also by not providing the promised services should be considered as deceptive business practice. If I do not get the service that I pay for and am constantly being mislead by the company the by all means they should be held accountable. Comcast did not provide the service that was promised to customers and overcharged them for said "service". They must be held accountable.
All cable and satellite providers have to abide by Federal Trade and Federal Communications Commissions regulations. If one isn't, turn the company in. And while it's annoying, egregious promotion isn't illegal as long as the company honor its claims and stays out of the fine print. As long as big claims and special terms are out in the open, then the company is operating legally.
Large companies like Comcast make a lot of money from the work of individuals. They should also be held accountable when people mislead customers and potential customers through deceptive business practices. It is not enough for the company to say they were unaware of the actions of some people working for them.
When it comes to deceiving customers, Comcast is that the top of the list. The cable companies have had it far too good for far too long when it comes to treating their customers like garbage. It's about time they actually go to court or at least pay up for their deceptions.