I contacted Aquarium Care Center (Ocean Township, NJ) after I noticed a mistake on my charge card. These guys were great when they were at the Fragtoberfest, and they were still just as polite and professional when dealing with my credit card. They promptly replied to my emails, and within a couple of days issued my credit. I hope they come to the show again next year, and I strongly suggest you check out their website, www.aquariumcarecenter.com.