I'm guessing somebody has a bad processing box in line trying to force the audio signal to ITU R128 loudness standards, and it's not set up correctly. This wouldn't be the first time nor the last time this kind of thing happens.
Call the cable company and complain, and follow it up with an email. I would also try to get the same show recorded on a different cable system and/or DirecTV or Dish, then compare the recordings. Do that, and you might have a sense of how and where the signal is going wrong.
I can tell you that these cheap cable reality shows are generally mixed in the edit bay, and as a result audio is about 1% of the attention of the producers. Their belief is if they can hear some audio there, it's basically good enough. The better shows spend more money and actually mix the show in a dedicated mixing theater, but not enough of them do this, especially on cable budgets.