Remember also that the customer service desk is not open the same hours as the store. There were a couple of times when I went to return something and was told to come back the next day because customer service was closed. One time I got charged a higher price than was on the sign and didn't notice until after paying. The clerk told me there was nothing she could do and to come back the next day because customer service was closed. 5 seconds after paying = "come back tomorrow".