Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Defective- Hopefully a one time event

Bought these in black, size 11W right after Christmas 2011. Began wearing them to work in January 2012 (office environment). Within 30 days the soles on both shoes began separating from the body of the shoe. After a couple more days the left sole had separated over halfway off the shoe (felt like I had clown shoes). I contacted ShoeMall and they promptly sent a pre-paid shipping label to return for refund....way to go ShoeMall!I have faithfully purchased Nunn-Bush shoes for years and the last two pair of the Cameron's I had lasted for about 2 years each. I will try again...maybe I just got a Friday afternoon special off the assembly line. Hopefully this is not a sign of systemic issues with their overseas manufacturing