Let 'em cancel.
AMC (and so many other so-called "movie" channels") have gone to constantly bombarding viewers with those stupid popups and animated ads in the corners of the screens.
I've gotten so irritated at them that I've actually shut off the TV or changed to a program I don't care for as well just to stop the irritation.
I'm sure that these outfits will respond that "our surveys show that viewers love having distracting popups", so resistance is futile.
However, shutting off the TV and going for a bike ride, hike or to read a good book isn't futile.
Buckle Up. It makes it harder for the aliens to suck you out of your car.