Worst Customer Service!

I placed my order and upon receiving my confirmation email I noticed I had ordered the incorrect shade of the contour stick. I then immediately emailed them and advised them of this and asked if they could change it to the correct shade before sending my parcel.

I also sent a whatsapp and then IG DM, they still have not responded to my email or whatsapp two days later, on IG they advised they cannot change my order but they can send it and I can send it back and once they receive the item back they can send me the correct shade at an additional cost of R160 - make that make sense please???? If my parcel has already been shipped I could understand, but my order is literally not even packed yet and due to still be processed why not just give me the correct shade, I have advised in my email what the correct shade is now we need to go back and forth sending parcels around at extra costs?? This is absolutely ridiculous and it is the worst customer service I have experienced in while. They do not care about their customers at all! Highly disappointed and will not order from them again.