Hello called my wireless router customer service today. Which was linkys and I had to reset and make up my own password and internet name. This works
Someone hacked into my wifi
You may be doing this yourself. If you are using one of the scrolling screen savers that includes links to various channels, exiting the screen saver by pressing OK or the Play/Pause key on your remote may cause a channel to be installed. Changing to a screensaver without these links can eliminate this possibility.
Another thing to consider, if you have more than one Roku device connected to your Roku account, a channel added/removed on one Roku is added/removed on all.