Purchased a pair of shoes that have a design flaw and causes the backs to come loose and get stuck under the heel. This wasn't realised until 20 days after purchased (first time I wore them). When I took the shoes back they wouldn't refund me and despite trying another pair on in the shop which did exactly the same thing, I was told the most they would do was an exchange! Even though it was clear that the shoes were the correct size, they manager said my feet must have a different shape arch to most peoples and they hadn't had any other people experience this. So I am now stuck with a pair of £160 shoes that have an obvious design flaw. Customer services have been no use what so ever, so now I am having to speak to trading standards about this.