I had contacted the company because of damage on 2 pieces and the back panel not fitting well.  The person I spoke with was very polite and did not hesitate to offer to ship out replacement pieces which arrived within 2 weeks.  
The product its self is sturdy and pleasant looking though doesn't come together as sharply as I would like.  The backing is so thin, it easily warps.  As a matter of fact, that's part of the reason I required another one, the 1st piece shipped, was so warped, it was difficult to affix, and it's TAPED together (I couldn't believe it, actually package taped together).  Once together, with books on it, it appears okay, nothing spectacular.