DKNY Fragrance for Women

I was at the Pavilion Foschini stores on the 21st February, I purchased the Lacoste new fragrance that was on promotion e high is lovely as I was in store the promoter of the DKNY Fragrance forced me to also purchase their new fragrance she sprayed on my clothes at that time I thought the perfume was nice but I guess it's because I had other perfumes on my clothes which are also expensive , I don't buy cheap perfumes don't mind paying more for a good one. At the till I informed the promoter that if it's not good once I spray on its on I will return it as it was my first time buying DKNY. On Monday I sprayed on its own the fragrance is terrible gave me headaches and nausea the entire day on Wednesday decided to return it at foschini where I was assisted by Angie who informed me there and there that they can't accept it as it is no longer on its original box. I always throw boxes once purchased a fragrance I don't keep boxes I explained that but still I was told nothing can be done. This means foschini and DKNY does not care about my health all they want is pushing sales not taking into account once health, I got sick terribly so I must still keep the fragrance that made me sick?