CS is one of my main suppliers, I love their oils. For me, their customer service has been very pleasant. I agree with the opinions based on personal experiences of those who claim that Diane along with the other two gentlemen at CS are VERY helpful. However, one day my inquisitive nature regarding wicking must have annoyed Diane, she made me blush over the phone...made me feel stupid...lol...:embarasse Since then, I have not called back but still order from them. I honestly don't believe that Diane had any intentions of offending me. It's out of character for Diane or anyone at CS to be rude or offensive. Forgive, forget, move on.