Yes, this is very frustrating. There is no good way to contact King Support. When I fill out the contact form, I always get answered by a Bot that has nothing to do with getting the 3000 level badge. I've tried everything others have suggested, and it doesn't update the badge. Maybe King will figure this out and correct…
I guess I'll just have to live with the 2000 badge. I tried repeating level 3000 5 times now and nothing changed. I logged in and out multiple times. I don't understand why the badge doesn't update. It didn't update at 2500 either like it said it would when I got an email from King.