The worst in the business. I ordered a Watts water filter from them. It didn't arrive for 10 days, so I called. The lady on the phone rather snotty, said it was a 3 week lead time... It arrived, from the manufacturer after 3 weeks. Wrong item. KaTom only offered to "contact the manufacturer" on my behalf. Long story short, it's been over 7 weeks since I ordered from them. They won't refund my money, they won't return my emails or calls. They say that since I ordered through them, I can't even talk to the mfg myself, as it is on "their" account. Bottom line... they have literally refused to do anything for me. They have stated: "when we hear from Watts, we will contact you." They have done nothing, and they won't refund my money. Their phone person puts you through to a vm, that takes your info and says they will call you back.... They NEVER call you back.