Upset client

So today I purchased an essence cover stick at dischem Mutual Park on the morning of the 01/08/2018 as I walked out of the store I then accidentally decided to open the cover stick on my way out I then realized the shade of cover stick was a different colour that I was supposed to buy after opening it. I then went back into the store spoke to the consultant at the store and we both agreed that I haven't used the cover stick and we both saw that only the seal was broken. In this instance I asked them to only but exchange the cover stick for a different shade and I was told bluntly no bearing in mind both the consultant and I agreed that I haven't used the product at all the only damn thing that was broken was the seal sticker of the item. Why do I have to struggle in exchanging a simple product like this and having my till slip with me and my eft receipt.. It's not as if I stole the ****** cover stick from the shop, I feel offended by the fact that a paying customer like myself has to struggle with getting a simple exchange done at store.. It's not as if the seal of the product can't be replaced. This is appalling customer service I've been put through hell trying to exchange this damn product, I've called the customer service department and to no avail have I been helped only to be told that we'll look into it I feel that dischem in Mutual Park is a let down to me. I purchase all my toiletries on a monthly basis at this mutual park and now to all of a sudden to be told I cannot exchange a simple miniscule product like a cover stick.. I thin k that as a loyal client to the store I should be refunded with my money and as a result of my purchase I should be compensated for my time and effort wasted just trying to get this resolved.. I feel that I will never set foot in that place again small things like this ruin a companies good name this is really not the way any customer should feel.. I will spread the word that dischem is not a reliable place to buy any products from as they refuse to just merely exchange a simple unused cover stick for a different shade that I needed.. #really disappointed #appalled #angry client.