lmao if your parents are wealthy enough to send you to college at UCSB, paying everything for you they're not gonna kick you out to the streets because you don't want to go to the college THEY picked out for you. That's a bluff they're using, they're your parents, they care about you far more than that.
Stop being a pussy, this is your choice, talk to them, and when they refuse to talk and instead try to use their authority DO NOT back down and say that you're not going to UCSB (Assuming you really do not want to go there).
Once you're an adult it's your life to live, not your parents. You're going to have to learn to break away from them sooner or later. Think about whether or not you really want to do what they're making you doing, and if the answer is "no" then fight back on it.