Last night my Comcast cable tv set top box started telling me it was unauthorized. I went through their phone tree twice (they simply booted me the first time ... Telling me to hang up an call again WTF?). I finally talk to a human -- nice and seems competent -- and he can't find any evidence of my having a set top box. Eventually he says that maybe the relevant system is down, try to call again in the morning. Fine, not his fault. But before I hang up he reads out a recorded item about how they are there ready to support me 24/7.
Oh and I love how I have to enter the same phone number twice AND give it to the human ... "For security purposes."