Today, I got the op art turquiose Kristin tote. When I looked at the bottom, I noticed a very tiny patch of fraying. It's at the very bottom, so you can't tell when I'm wearing it. Should I go back to the store and see if I can get another one, or do you think they would tell me they can't exchange it? The SA mentioned it was the last one they had in stock of that color. I already took the tags off, before realizing that patch on the bottom.