Rogers gets the guide info provided for them from a few sources. Unfortunately if those sources are not updated with the right info from the channels, then pushed to rogers, mistakes can happen. This can also happen when the channel last second decides to change what they are airing.
@jonjaymcc : Check out the following thread, posts 1, 3, 15 and the last few pages. This issue has been ongoing for years and Rogers is now concentrating on IgniteTV (IPTV), so I doubt the IPG situation will get any better.