This is purely a personal case study, but it is my second really bad experience with WOW Cable and Internet service and their really awful customer service. In this economy, you'd think that supervisors (or at least that's what they claim to be on the phone) would learn just a little bit about how to treat a customer, even if they aren't always right.
I was lured back to WOW with a really great deal in December 2011. Okay, admittedly, my other really great deal with Comcast Xfinity was expiring and they were going to begin charging me 74 gazillion dollars per month to maintain my service, but WOW got me to come subcribe to their service because they were offereing me a phenomenal package and would honor it until 2014.

So, anyway, my deal with Comcast/Xfinity expired and I called WOW. I told them about my previous deal, and here's what they offered me:
Three HD/DVR boxes at no charge (my bill indicated that each one was $13 per month, and right below was a line item that said: "100% off for 12 months" for each box. This is their bill! This is their acknowledgement that they offered me the deal.
Then, after only three months, they sent my new bill with no credits for the HD/DVR boxes. Okay, probably just another in a long line of WOW billing screw ups, but a phone call should fix it. Wrong!
When I called and the issue was looked into by the snotty, pompous customer service jerk, he came back and told me that it expired because it's been a year. Hold on. Let me get my calculator out. December 2011 plus 12 months should take me somewhere in the vicinty of December 2012. Not March 2012. I always try to be nice and let these people know that I'm aware that the problem probably isn't their fault, but this guy was really pissing me off with his piece of crap attitude. I politely informed him that I just came back to WOW at the end of the year and that my deal (although originally was to be good until 2014) should at least be honored until December 2012 as it states RIGHT ON THE BILL THEY SENT ME.
He said he was sorry, but he couldn't approve that deal because no one could authorize giving away three HD/DVR's for 12 months. Excuse me? Someone DID authorize that deal and it's right there on the first three bills they sent.
I was pretty astonished and calmly stated, "So, what you're telling me is that the deal you offered me to get me to cancel my service with another provider, which I have in writing from you, will not be honored." He said, "Yeah, that's right. Sorry."
Unbelievable. Even if for some reason he had to convey awful news to a customer who is willing to spend about $1, 500 per year for their inferior service, they should at least be trained to treat the public with decency and respect.