Sizes way to small, denied to fit clothes in store

<p>I also bought some woman underwear at MrPrice today at my normal size of 34. In store the attendant told me that I could not fit the clothes as it is not allowed (which I could somewhat understand). Yet, at home when I measured the clothes to that I usually wear (did not fit), it was WAY to small!!<br />So I am going back to the store and demand a refund, because how in the world is one suppose to know that your size is smaller than usual, yet you cannot fit in store?</p>