I don't know how some of these companies remain in business, perhaps its because people keep on supporting them, expecting bad service.
In the beginning days of QVC, I made three purchases, and never used them since. Item one was a super duper Lexmark printer, at a fantastic never to be repeated price. A couple of weeks late, the printer was available at most places at a much reduced price. The second item was a Heat Wand which arrived faulty, fair dues, this was replaced within 14 days. The last item was a really nice looking ladies ring. When it arrived, it was a very disappointing specimen (surprising how a TV shot and the spiel can make things appear better!).