Safari notifications
So you've done everything correctly but the notifications are still coming through, there are a couple things to try...

But first please quit Safari, and then do a full reboot, and test again, as even when you close Safari the Safari notification service continues to run in the background.

If you are still having an issue:


Quit Safari.
Go to Finder.
Press CommandShiftG.
Type ~/Library/Preferences into the field.
Press Go.
Find com.apple.Safari.
Move it somewhere safe.
Reopen Safari and reconfigure the Allow websites to ask permission to send push notifications.
Try with one of the problem websites.


This will remove your Safari preferences and will need to be setup again but it may resolve the issue.