We ordered a replacement filter for our air purifier and the company accidentally sent us two. When we informed them of the mistake, instead of thanking us for being honest, they sent us an email saying that we would have to repackage the filter and take it to a Fed ex store. They then threatened that if they didnt receive it back within thirty days, they would charge my credit card. Speaking of ungratefu! Maybe I'm mistaken, but I believe that would be unlawful use of my credit card. I didn't expect anything for free. If I did I wouldnt have contacted them in the first place. I just didn't expect to be treated like a criminal for doing the right thing. Maybe that is their new tactic to sell more filters. Terrible customer service. Buy a different product from a better company.