"Ordered 6 filters on 7-15-2018. The order is to arrive in a week. Called and after a lengthy on hold, they said waiting for materials to make the filters. Called again a day after they promised the order will be shipped. Still, another excuse of waiting for their material. Called again today 8-6-2018, after 7 minutes on hold, I was told to a voicemail, and they will get back to me within a business day. They should not accept orders knowing they can not deliver on time as promised! Have no material on hand to make the product while still selling them appears to be some sort of ponzi scheme!"