Poor Customer Service

I ordered orange leggings from Zalemart and was contacted on Sunday that the "peach" leggings are out of stock but they do have "orange" ones. Orange was what I ordered on the website. After back and forth via Whatsapp, I decided to settle for the "orange" ones even though one was a reject. Needed it by Saturday. Yesterday the package arrived at the colour is far from "orange". Been trying to book a refund via email, whatsapp and the website with no results. No one gets back to you and on the website I get "not returnable"!! This is not what I ordered!