If you've identified a data issue on a Mapbox-provided map, you can report it using the Improve the map tool. This tool allows you to contribute and correct map data.
For more information about where Mapbox's map data comes from and how you can contribute, you can visit the "Getting Started" guide for Mapbox data.
If you're facing other data-related issues, you can contact Mapbox Support with details about the specific issue.