If you believe your Facebook business page has been stolen or compromised, here are the steps you can take to deal with the situation:

1. **Regain Access**: If you still have access to your account, try regaining control by changing your password and reviewing your account security settings.

2. **Report the Issue**: Use Facebook’s reporting tools to report the unauthorized access to your business page. Go to the page, click on the three dots (…) on the cover photo, and select “Find support or report Page.” Follow the instructions to report the issue.

3. **Contact Facebook Support**: Visit the Facebook Help Center and look for the appropriate contact option to report a compromised page. You might need to provide proof of ownership.

4. **Notify Followers**: Post on your personal profile or other social media platforms to let your followers know about the situation. Inform them that your business page may be compromised and that you’re taking steps to resolve it.

5. **Monitor Activity**: Keep an eye on any changes made to the page and document any suspicious activities. This information might be useful in proving ownership later.

6. **Review Admin Access**: Check the list of admins for your business page. Remove any unfamiliar or unauthorized users.

7. **Secure Your Account**: Ensure that your personal account is also secure. Change your password, enable two-factor authentication, and review your security settings.

8. **Appeal to Facebook**: If your page is removed or taken down by Facebook due to a security issue, you can appeal the decision through the appropriate channels.

9. **Stay Patient**: Resolving these issues might take time, so it’s important to remain patient throughout the process.

Remember that prevention is key. Regularly update your passwords, enable two-factor authentication, and be cautious when granting access to others. Taking these steps can help reduce the risk of your Facebook business page being stolen in the future.