Use the uninstallers in this post: https://forums.comodo.com/t/official-comodo-uninstaller-v3-2-0-82-released/314767/101
You may also need to remove leftover drivers as I describe in this post (see link below) but you’ll need the run the uninstaller first then remove the drivers and re-run the uninstaller : Remove Leftover Drivers
I’ve asked for this to be included in removing CIS/CF a number of times but not been implemented yet.