Instruct: Classify Amazon reviews into positive or negative sentiment
Query: stuck with leftover filters

I have bought Pur filters repeatedly over the years. The filters have always clogged long before the indicator turns red. Previously, I returned them, as refills were $20 each and had to be replaced weekly. This one had cheaper refills, and they last for three or four weeks before they clog. BY clog, I mean no water comes through at all. I could deal with that and I could deal with the fact that pieces of the outside were falling off, revealing black underneath. I bought this one in February, and now, eight months later it leaks as much unfiltered water as filtered when I filter water, and it drips water when washing dishes. Where do I send it back, along with the unused replacement filters?