I just read about the Pepsi story, but not sure I'll find time to watch the show. I would think any company would have its lawyers review any ads as you should not promise anything you can't deliver on. Suing a customer is not a good look. I remember the Hoover thing, but I didn't get in on it.
There were cases where companies would mis-price some item online and people would pile in, but I heard that the stated price is 'an offer to trade' and is not always binding. When the system is all automated they may take orders anyway.
Complaining about rewards is a good way to not get them :D I don't need to tell you how Hive works really, but you will still throw your toys out of the pram (as you love to say).
Have some !PIZZA