Have you seen this article already?
Changing your domain’s DNS away from our hosting makes it completely impossible for us to show what happens on your domain. However, due to DNS caching, it can take up to 72 hours for everyone to check your current DNS settings.
Deleting the domain, deactivating the account or deleting the account won’t fix this. Patience will.
Same if you’re switching to another account with us. Your new account may be all set up and ready to go, but if your browser is still connecting to the old server, you won’t be able to see your site until your computer decides it’s time to check the latest DNS settings.