No refund on Sale item

<p>Recently I started liking the clothes that Cotton on is selling.. Last week I purchased a dress and tops and for the first time bought me a shoe. The shoe isn't a perfect fit since the stitching is causing discomfort. Where I live we don't have a Cotton on shop and i have to literally travel 60km just to hear that at N1 city they cant refund me because they do not have a shoe range. Today I planned to return it to Canal Walk and now they do not want to give me a refund but rather a gift voucher or I should exchange it for something else. I already bought the items that i liked so what must i do with a gift voucher that I am just going to put in my bag and forget about. If the sales assistant disclosed this i would've understood.This is the first time that I encounter a shop where you can't get your own money back for a sale item. If this was made known to me i wouldn't have bought the shoe just for the fact that i know i might need to return it if its not a perfect fit. It completely ruined my whole sales experience of Cotton On. I doubt i will purchase anything just because of the after sales experience.</p>