I got wax out of my carpet by using a coolish iron. Make a pad of clean, white tissue or thin fabric, place it over the wax and iron carefully several times. change the pad as you go, as it will soak up the warm, liquid wax. eventually, it all comes out onto the paper. You can then use a little carpet shampoo, in accordance with manufacturer's instructions to lift any residue. you can use brown paper as well, but i wouldn't advise it on a pale carpet.