Nykaa.com — one product is missing in my order and I paid for it

Website:

www.nykaa.com

I have ordered 3 lakme enrich lip crayon worth rs.185 each, 1 lakme eyeliner, 1 vaadi lip balm and 1 maybelline new york baby lips. But i didn't get 1 lakme enrich mauve magic lip crayon worth rs.185. And in my order invoice the courier person took that money also. I was out of town thats why i didn't get the time to instantly checkout my purchase. Today when i saw it one lipstick was missing. Kindly give back my missing product or return the money of that product.