You may want to post your question is the Using Houzz section or you can contact support@houzz.com.

Thank you for all the photos of your stain. There is no doubt, you are correct, you do have a stain. We gave you free stain remover and offered to remediate the stain for 1/2 price since you were a recent customer. A stain in stone doesn't constitute a manufacturing defect any more than a stain in a brand new carpet makes the new carpet defective. You stained the stone a month and a half after it was installed and want Stone Masters to be financially responsible. We're sorry about the stain, but we did not cause it. If you really have other issues, why didn't you mentioned them or send a photo in any of the numerous e-mails or conversations about the stain? PS: You did not buy granite, you have quartzite which is a natural stone.