Garrys mod addon won't uninstall!

So i am getting annoyed by this addon I installed earlier today. I then got on one of my favorite servers and then the addon was still there. I had no idea the addon would be there. So I uninstalled the addon but it was still there on the servers.

Did you Unsubscribe AND remove it from your game files?

Using the In-game Uninstall button should do this too

Yes i did

do it again