I have a sweet friend who was in an arranged marriage. I was sooo astonished when she told me. It was so alien to me.
She divorced the guy once they got here in the states and her family basically disowned her. She shamed them.
When they divorced he got full custody but he left the kids with her. He sees them a few times per year and takes them to visit his family in the other country and stuff. He has always brought them back to her but if he didn't there isn't anything she can do, if he moved them to their home country anyway. Here in the states she could take it to court and maybe get a court order change.
But anyway, if you aren't happy you can leave. You can find a job and have a good life without him. If you want to stay in your life as it is then you need to decide how to move forward. If your husband does side with you that may be why his mother and sister hate you, that he sticks with you instead of them. Be glad he doesn't beat you for being rude to his family. I had a friend that worked with me that was from Iraq. She would drop everything at 7:55pm and start her husbands dinner, what he had told her he wanted to eat, so when he came home for his dinner break from his second job he could sit down to eat exactly what he wanted. If it was even a minute late he'd beat her to teach her how to be a good/better wife. She didn't get many bruises. She told me it was his job to teach her how to be a good wife...I'd probably use a heavy frying pan or my marble rolling pin to "teach" him how to be a good husband.
If you are being hurt you can leave, you have options. Please find a phone number to a domestic violence hot line so you can find resources near you.
If you need help, it's there.
Now, if you do want to stay married so you can have your home, family, and life then I suggest you and hubby sit down and talk about this. IF he's on your side then you need to not talk to them ever again, okay? You have no reason to submit yourself to them and be less than them. Stand proud of yourself and be the mother and wife, the best you can be so you can be a whole happy person.