This teaches you just how to ask Facebook to get rid of reviews from a service Page. Facebook will just remove reviews that break their Neighborhood Requirements.
Remove Reviews From Facebook
Actions
1. Open up Facebook. It's heaven symbol with a white "f" in the application drawer.
2. Go to the review you want to delete.
3. Touch 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 only be erased if it breaches Facebook's Neighborhood Requirements. [2] When you choose a factor, comply with the on-screen instructions to send your request.