I have two (so far): Capital One They fucked me hard on a customer service issue and were complete cunts when I tried to resolve it. This one guy in particular, raising his voice, attitude, wasted all this time with him when a supervisor would have resolved it in 2 minutes. Canceled the card, will never use them again, ever. America West Airlines (now US Airways) This is in the mid-1990s. I was sitting on a plane, booked, confirmed, ready for take off and this fat ass flight attendant comes waddling down the plane ordering me off. At first I don't move, refuse to give up my seat, but then I realize I'm making a big scene. Up at the gate, she tells me I'm going to have to take a later flight, my ticket was XYZ instead of ABC, blah, blah, blah. All bullshit. Didn't listen to a word I said when I tried to explain my situation. Totally ruined by travel plans because it was only a two-day trip I was taking. I wrote a letter to complain and, to their credit, they did give me a decent sized voucher in response, acknowledged they were wrong, etc, so maybe I should forgive and move on, but the way they dragged me off the plane in front of everyone, a plane that was about to take off, when I had a confirmed seat, paid in advance, when it ruined the entire weekend, etc, horrible fuck-you attitude, etc. I decided never to fly them again and haven't since.