PRO Referral

I signed up for Pro Referral at the local Home Depot. They promptly sent out e-mails to various contractors in the area. One replied to me; one informed ProReferral that he wasn't available and two informed Pro Referral that they had tried to call, but were unsuccessful. These responses prompted my first contact with Pro Referral where I informed him that the two businesses had not tried to contact me, which I could verify through perusing my phone usage online. I did not receive any response. I went to the Pro Referral online site and tried to review ratings. The first time I tried, I was unable to find the actual reviews, so I used the the overall rating of the one contractor who contacted me. This rating was fairly high (4 of 5 stars with 23 reviews). Therefore I hired the contractor. The actual work of the contractor was only marginally acceptable. I went back to the ProReferral site and "poked around" some more. One of my clicks resulted in messaging the contractor who called me. He returned the next day and did some further work but was extremely antagonistic and argumentative. Later that day I received an electronic request that I enter a review on the site and I did so. No sooner had I hit enter than I received a call from the contractor asking me to change my rating; I didn't. A few hours later I received a call from ProReferral asking me to change my rating. I explained to the caller why I was not willing to change the given rating. I informed him that I had photos showing the completed work to back up my rating. The caller requested that I send those pictures to him, which I promptly did. One of those pictures showed a grab bar installation where the contractor cracked the tile and loosened it from the wall (attached below). Four days later, I received a generic response that told me to "work it out with the contractor." Pro Referral states that it guarantees the work. This appears to be an untrue statement.