QVC overriding other channels???

For the last few months, QVC seems to be overriding our signal. When we start Netflix, for example, there is usually a delay for Netflix to kick in. During that delay, QVC takes over the TV and runs in the background during the Netflix menu. Also, if there is a delay when changing channels, QVC takes over the TV. Sometimes I actually have to actively change the channels to get rid of it. Plus, I hate QVC!

How do I stop this???