We have a Fischer & Paykel vent hood, which we bought while renovating our kitchen specifically because of its advertised low noise level. It sounds like a jet

We have a Fischer & Paykel vent hood, which we bought while renovating our kitchen specifically because of its advertised low noise level. It sounds like a jet engine revving up whenever it's running, even on the lowest setting. F&P sent out two technicians in succession, both of whom confirm (as registered, for example, by a decibel meter on our phone) that it's about 70% louder than advertised, even on its lowest setting; and then they straight up lied on their reports, saying (in so many words) that we were imagining the noise, or merely that we were 'dissatisfied'. Months in, and the only resolution we've got is that they've offered to give us a discount on another vent hood—which, presumably, also won't perform to specifications …. There's got to be some reliable form of—excuse my optimism; I'm sure there isn't, but there should be some reliable form of redress for a product that simply, in a documented fashion, doesn't perform up to specifications. Companies advertise what they feel like without fear, because they don't experience repercussions for this false advertising.