又和老板撞上了

还又一个月就到满3年工作,既使辞职,也可拿到公司的3%matching fund(not sure if I get the right name).不幸昨天又和老板干上了.辛辛苦库作了一年的工作又要被迫让人.想不通. 想马上辞职,又想到这个3%fund. 帮我想想, what I should do?
Ask the boss to approve me 4 wks vocation(I have not done vacation for the past 3 years, so that I don't need to come back to see him again if I resign a month later), he refused, claimed although the project is switched, but I still need to support all the work (that is, I do the same exact work, just I won't be the lead).
Really don't want to go back to work.
Also, In the current situation, strongly feel my boss is unfair to me. Are there any ways to protect my self and fight back? Where shall I go to ask help? I went to HR already. I don't think they'll help you too much. Shall I hire a lawyer to fight for the justice? What are the key things I should be careful when I want to make statements: my boss is not qualified for his job?

Any help will be appreciated !