Thats funny, me and my hubby were just talking about people from pakistan who do that. Make promises or say things they never mean. Like he probably just says yes and never means it and then when he thinks about it he says no. Anyways either way, its a really annoying habbit.
It doesn't matter how religious you guys are, you are still Muslims. You still have to follow Islam, whatever way you can. And if not for the sake of Allah then I dont know for the sake of self-respect maybe tell him to start keeping his promises. And tell him that he should consider you his equal when making decisions like that. Like Mamaof3 said you gotta stand up for yourself but be prepared to pay the price. And if you don't love him, and he is making your life hell then look into divorce.
Other than that, I think we can just pray that you situation improves and somehow Allah puts love and respect in his heart for you, ameen.
I am a very strong believer in prayer and I know that if you pray to Allah and do salat-e-hajat, Allah will find a way for you. Maybe change his mind or find a another option. But please, regardless of how religious you are, do not stop praying to Allah to improve your situation. His mercy is WAY BIGGER than our bad deeds.