Bests & Worsts Reviews from Amazon

HELP!! I fell in love with this diffuser on the first night of use. It went perfectly, and I think I even slept better! Then I went to use it the 2nd night, and no mist came out at all!! Today, I've had it plugged in for 6 hours straight, and not one drop of water was used. So disappointing. Who do I contact about returns and exchanges?? 8/7/15 UPDATE!!! The company saw my review and sent me an email letting me know that a replacement diffuser was on its way to me. It arrived only a few days later! We've been using it, and are very pleased with it. Also, very pleased with how the company didn't even wait for me to request an exchange - they just took charge and did it. Every single diffuser I looked at out here has issues occasionally - it happens. Thank you for fixing the problem so quickly!!