MAC COSMETICS DO NOT ORDER ONLINE - WORST CUSTOMER SERVICE

I bought foundation and received it on 25 November - the very next day i informed them that the product is not what i required and need to return it - since then i have followed up multiple times via whatsapp, e-mail and phone calls and still today i am sitting with the product and customer care just inform me there is nothing they can do the courier must collect - WILL NEVER BUY ONLINE FROM THEM AGAIN