A few years ago I took a cat from a rescue centre. She's very difficult, she doesn't like humans and from the start she growled and hissed at my DH, and swipes at him when he walks past her (and she chooses to sit in the middle of the kitchen floor when he's cooking etc).
She refuses to be picked up, she attacks if you try.
She has very long fur, and refuses to be groomed, she attacks if you try. I had a groomer come to my house, and took her to see a pair of groomers - none of them could groom her, she was the most aggressive cat they'd ever encountered.
Each year she gets very matted up, including around her bottom, so she gets poo stuck to her matted bottom fur and starts to smell bad. Each year I take her to the vets to be shaved under sedation.
She does things like jump on to my desk and then attack me for using my mouse and keyboard. It's quite frightening.
I don't feel I can cope with having her, but then it doesn't seem fair to try and rehome her as I would just be passing on the problem to someone else.
Anyone got any suggestions?