I am not sure this complaint is entirely accurate.
Multiple varieties of meatballs are at a featured price today, including some which were never aired. The negative reviews still exist until the original item (also at featured price), but the other varieties, along with other ship weeks, all have separate item numbers, and like most things, the reviews do not show under these additional item numbers.
While these may or may not be less-than-delicious meatballs, I do not think there is a nefarious plot afoot at QVC to hide reviews. Like so many things, people need to fully look into products before purchasing them.