I wished I had paid better attention to the previous reviews. I spent 3-4 hours this afternoon trying to assemble this product. As stated in the previous reviews, the cam locks are terrible. I'd locked the pieces together only to have them unlock in a matter of seconds. Every time I'd move a piece, my work would come undone. At the halfway point, I gave up. I wasn't sure if the bar would ever stay together once I completed it. 
I tried calling the manufactor's customer service department but ended up in a loop of being told I was next in the queue and then being forced to voice mail. I left a message but never heard back from anyone. Fortunately, the customer service team at Wayfair was great and allowed me to get a refund on the product. 
Save yourself hours of aggrevation and stay away from this product. The quality is junk and the manufacturer doesn't stand behind it's product.