I don't think confidence or narcissism is your problem here.. on the surface of it you sound quite ignorant to me, and you seem to think you're above the people there (not sure if you are or not, can't seem to figure that out from your posts)
If you're supposed to take instructions from people but you don't want to, or you don't want to be nice to people in your workplace, you also say you're above gossip and actually think you're 'all that', and they're just ostracising you because you keep yourself to yourself. They probably just think you're ignorant so have decided to ignore you as you have ignored them.. and now you're accusing them of bullying for doing the same thing that you've been doing to them.
It sounds like they've been told to give you a chance and you've been told not to be so ignorant, do with that what you will, the fact your employer hasn't sided with you is an indication that there is fault on both sides here.
It's fine to not be friends with everyone you work with, but don't expect people to keep trying with you, when you give zero effort yourself. I have a family member like this and they have such a lonely existence because they just won't give people the time of day, they say other people just aren't worth their time or effort.. I think it's a severe lack of social confidence personally, but it comes across as massively ignorant.
Are you like it in personal relationships too or is it just a work problem?