How To Block A Youtube Channel?
Open youtube
Search the channel which you want to delete.
Go on the profile picture of channel and click on the "more" at the bottom of channel profile picture.
When you click on "more" then "About" page open.
When "About" page is open then scroll down at the end of page. When you reached at the end of page then you see option "Report User".
Click the "Report User". Then four options "Hide user from my channel", "Report channel art", "Report profile picture", "Report user" are showing.
Then click on the option which you want to block or report.
If you follow the all given steups then which thing you want to block, can be blocked. Including also a youtube channel.