It will take up to 15 minutes for your changes to aggregate to the company page. In rare occasions, when the company affiliation is removed from the team, the association in the database still remains, which causes the team to be listed on the company page. Try reaffiliating your team with the national company and then remove the assocation once more and wait 15 minutes. If the team remains on the company page, then please Contact Support and reference this article.  Luminate Support may be able to remove the association from the database level.