Do you have stuff in your home that cost a lot, that supposedly works well, and actually doesn't?

I Replaced my 3 older thermostat with new Ecobee digital thermostats at a cost of $1,000 . The Ecobee thermostats are the digital equipment from hell. They don't turn on when they're supposed to. When they do turn on, they run too long, or they don't, or they run for 2 seconds and quit. They get the temperatures wrong, and no matter how I try to program them, they ignore what I've done for the most part. Put it bluntly: I have spent two months basically saying, "Who do I have to fuck to get these things to work?" It turns out that it's virtually impossible to talk to the company. They don't return phone calls, and they don't return email, and they basically ignore anything you say to them, even if you're really nice, which is how I have been. These things have a warranty that they apparently just ignore. My next step is going to be to submit a complaint to the California Attorney General's office about their neglect and refusal to honor warranty terms. That's how far this has gone. It's driving me nuts. These things are nothing but pretty on-off switches that occasionally work, sometimes, maybe. I hate these things, and I hate this company. Do you have anything like this?

Do you have stuff in your home that cost a lot, that supposedly works well, and actually doesn't?
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