build zoom .com censors reviews Internet

Found a contractor through Build Zoom for an expansion project on my home.  Had hired through their recomendations before with good results and left a positive review.  This time, the hire was a nightmare and is costing me a lot of lost money to the contractor and money to fix all the issues he breated.  When I tried to post a review on this experience to Build Zoom, it was disputed by the contractor.  I sent more information including that we had multiple inspections done of the work that mostly failed.  They have still denied my review.  I feel this totally compromises the basic premise of the site when they will only allow a positive review.  It makes the site a lot less than honest in it's own advertising.