So I contacted Giorgio Armani because one of my ETK intense shadows consistency changed for some weird reason. I contacted them via email and they replied very quickly. They ended up sending a refund check for $32. I love it when I get awesome customer service.
I also have had great experiences with Allthatglitters and Allcosmeticswholesale.com. I had received a product that had broken during shipment from each seller. I contacted them and got a replacement. It was too easy.