Pov from outsiders, Am I wrong for being mad?

So I need some outsiders pov please!!

So Long story short When I met my husband we are very young and the second day we met his mom up and left him in the street and moved away for a man. Which I took Him in only 2 days after meeting him. He has never known his dad and his family is pretty shitty.

So my point on this is that his family does not bother with him unless they want something from him! (Food,Money). which he gives in and causes disagreements between us. His sister has all her money to herself because they don't have rent or mortgage her daddy bought her a house and they only pay electric. We pay 1500 a month for rent and car payments and the whole 9 yards and also have 3 kids and one on the way.

So His sister had called him to ask him to pick up his mom which she is like 3-4 hours away and bring her to his sister's house. Which I don't agree with becuase the only reason she does not want to pick up there mother is because there little car eats gas and which I had said to him we have a 6v van that eats gas . So anyways he is suppose to go and leave me home with the kids because I refused to go because they won't help with gas to pick her up for them and 2 any time my husband asks his sister to make a pot of rice and WE BUY EVERYTHING AND MAKE SURE ITS ENOUGH TO FEED BOTH FAMILYS THEY IGNORE HIM OR HAVE A EXCUSE OR TALK SHIT SAYING HOW THEY DONT FUCK WITH US BECUASE WE ARE WEIRD . but he is quick to go do for his family and does not see my point of view. Am I over reacting?

There has been multiple times I bought dinner for both family's because they planned to cook and they would stood my husband up after spending over 100 on dinner.

Mind you she didt care when she left him homeless.

Sold his social security number and had people collecting unemployment in her state as him. So why is he still doing things for them and saying I'm over reacting. I dont feel bad for them. They didnt when they do things to him.

Also we both work so the only day we can see each other and spend time together is on Saturday he works from 6am-5pm I leave for work by 530pm and don't get home till 6am Sunday through Friday so my only day off that we both have off is Saturday and everyone keeps taking that day away from us. This has been discussed with him about spending time together but it's not changing.

Also i asked him to pick.up a box of diapers for me on his way home and ill pay for them so he will just have to grab them and come home so he has them when he watches them and he started going off on me and telling me no and didnt come home with any. So i had to order some to be delivered, yet he is quick to leave to go get her.