Very disappointed, wasted my hard earned money

So disappointed by the MAC makeup section of Foschini Canal Walk today. I asked the make up artist to test a MAC foundation & powder product on my face. She used it very lightly with a powder brush on my cheek and when I asked her to do my whole face so I can see whether the product is the right colour for my skin, she said she was not allowed to, and yet she'd spent a whole 15 minutes on another customer and I'd waited patiently for my turn. Then she sold me the product, which I immediately tried on in the mall bathroom where the mirrors were a lot brighter and I used a sponge applicator which revealed that the makeup was too dark for my skin. When I went back to the Foschini to complain, I was told they couldn't do anything about it or I could just buy another product. The manager disappeared in the middle of it. After paying R750 for this product, I have sadly received appalling service. Will not be buying from this shop again.