I thought of a bunch while I was reading this thread, so I'll post another one today: Dyson. Never, ever again will I purchase a Dyson product.
In 2008, I was really excited to buy my first Dyson when my old vacuum stopped working. I thought it was going to be compact and easier to use (no bags) and it would really have great suction.
Yeah, not so much. The machine had terrible suction, was made entirely of plastic, and in my first week of using it with no abuse whatsoever, two items snapped clean off - one was the plastic tab that held the vacuum cord on the unit, and the other one was a front corner piece. We had an artificial Christmas tree at the time, and I spent 10 minutes trying to get the stupid thing to vacumm up the artificial pine needles it dropped.
I called Dyson support to try and get the snapped off plastic things fixed on it - the support people were downright hostile. They told me that if I wanted to get it fixed, I needed to drive 100 miles round trip to drop it off at an "authorized Dyson repair center". I told them I was not driving 100 miles and I hadn't even owned the thing a week. They refused to allow me to mail it in for repair, and argued with me about the distance from where I lived to the Dyson service center location. Told me if I didn't want to drive the distance, then I was stuck with a vacuum with snapped off plastic parts. When told about the lack of suction, told me I was "using it wrong" - how does one use a vacuum WRONG?

Awful, cheaply made, EXPENSIVE, bad product with TERRIBLE customer service and reps who just didn't care. I'm going back to the arms of Panasonic (my old vacumm from them lasted me over 12 years - and actually sucked up Chrstimas tree needles on the first try). My husband still has the old Panasonic in the garage and uses it for cleaning the cars (still works with the hose attachments - it's the floor cleaning roller that crapped out on me to begin with).