i am suprised by the story. They should have given your money back unless the money went for the lawyer or for the process. If the money was their cut then they should have gave the money back to you. Why dont you complain it to the right bodies instead of writing their name in a public site. You can file a complain about them in USCIS as anonymous. Dont take me wrong but I dont think it is a good idea to put sombodies name in the public site like this. Maybe you have bad intention about them and at the same time there might be another side of the story. Personally I think you should complain to the USCIS,  only if you have enough proof to show that they had a ill intention. Chao