I feel I know this story very well...hmmmmm
And one more thing...If being happily married is like this( as per your profile)...Gudness, I dont wanna be married....agen? :(

MY ADVISE : talk to his mom/dad/family there about your situation. Usually, they are the one who will help you first then later on, they have to talk to thier son...
If all comes to worst, then it is time to talk to him straight about what are you going to do. If you have proof that (maybe he has somone) coz usually there is always wife instinct you know...then you can blacklist him....legally and he will be deported. Well it will be a very long, hard process and needed a lot of your time and effort.
GOODLUCK!