Overpriced products, especially when they know they're the only seller. On top of that, unfriendly customer service, mediocre shipping time and sky-high shipping fees.
I wrote a negative review a while ago but they have made huge strides. And they've been renamed (merger? Acquisition?) as "Centerwell" which has so far been flawless. I'm going to give them five stars this time because of the excellent communications they are now doing.
Products used: Pharmacy for automatic refilling of all my prescriptions by mail.
It loads very slowly. There are basically three views --- "all channels," your preferred channels (or another channel subset like sports) --- and "my shows." But it always opens in "all channels." If I could get it to always open in one of the other two views, the slowness would be somewhat more tolerable.