I ordered Zymax from this company and was disappointed so I sent it back. It came with a 30 day money back guarantee. I called the company to tell them I was sending the product back, and I asked how I was supposed to do it. The representative that I spoke with gave me the address, told me there was even a 30 day grace period after the first 30 day guarantee. Anyway, I returned the product and my card has not been credited. I haven't called the company or anything yet, though. I threw away all the information, so I got online to find a phone number or an address and that is how I found this website.