This instructs you how to ask Facebook to get rid of reviews from a business Page. Facebook will only delete reviews that breach their Neighborhood Requirements.
How To Delete A Facebook Review
Actions
1. Open Facebook. It's the blue symbol with a white "f" in the app drawer.
2. Most likely to the review you wish to delete.
3. Tap the downward-pointing arrow. It's at the top-right edge of the review. [1]
4. Click Report.
5. Select a factor. The review will just be erased if it breaks Facebook's Area Criteria. [2] As soon as you select a factor, comply with the on-screen guidelines to submit your request.