You don't sound a very assertive person, so maybe now is the time to gain confidence. It sounds like he is in charge in which case you have to address this balance and not allow him to have all his own way. I have no idea what he is like, but as long as he's not violent or abusive you can start pushing forward and see where it leads.
'He won't discuss anything with me' is not an option. He must discuss things with you. Fix a good time to sit down together and explain how you feel. Prepare for this so you know what you will say. Get a response to each of your issues, don't let it go until you have a response and a plan of action on how to make this particular thing better. If he gets frustrated and tries to shut it down then become more forceful and demand that the issue is dealt with. As I said, never tackle a man who is liable to violence, but as long as you're safe then keep pushing his buttons until he faces the problem.