When I rec'd shelves (3 boxes) box containing 2  35.4 x7.9 x 1.5 one of the shelves had a 7.9" crack on it. I was shocked because I am a longtime Wayfair customer and never had  damaged products. When I tried to follow all your instructions to return the 1 shelf it was so difficult that after hours I gave up. All I wanted was a replacement of 1 shelf. Now you have lost a customer . Why can't there be a helpful accommodation in this matter?