Bad service

Very bad service. I am not happy with this service I got at Foschini Mall of Africa. I purchased facial products on the 10th December 2023 and app**** them night and day for two days after purchase and I got a bed skin reaction and when I went to the store to report they say they will not assist me due to products open. What an I going to do with products that affected my skin. The lady was rude and didn't even seem to care