Am I wrong to be mad

Ok here is the story. 2 wks ago we moved in our new home. Since then I have mainly been doing the unpacking because I cant take having boxes everywhere! So anyway I unpacked the kitchen on my own and the bedroom and half of the dinning room. Without asking DH to help me. So mainly the boxes that are left downstairs in the den and the dinning room are his things that I cant carry upstairs beacuse it is too heavy and also cant put away because I dont know where they have to go . So anyway last weekend (sunday) DH's sister aksed if he could help move a car out of her garage because she is having her house redone and the were taking the roof off sometime this week. Anyway DH says how he going to go over early in the morning because he just wants to come home and he's not spending all say there. So anway he leaves last sunday around 930am and I'm home unpacking this blah blah blah. Comes 3:30 and he is still not home! So I call him and ask 'are you still working on the car?' he says ' No I'm helping walter (BI) take down the fence, So I get all mad and he says I'll be home later. So 4:30 he comes in and we get into a big fight because I'm mad that he spent a;; day over there helping them when here at our house things need to be done. He doesnt understand this and we are fighting. So anyway we make up the next day and everything is good. Yesterday DH comes home from work at 7pm and says 'tomorrow I have to help Walter move the TV. ' So right there I walk away and he's like what is wrong why are you mad. So I go into the whole thing How we now have a house and we have to worry about our house and not everyone else and how I want the boxes out of the living room etc. So anway I'm still pissed today because he told me to get over it and still went to his sisters houe to help. So I'm really pissed and havnt spoken to him.
The thing is I'm not normally to type to get mad or yell so when I do dont you think he should take a step back and say 'she really doesnt get this mad she must really be upset ' and instead of going to his sisters house call and say he cant make it,! UHHH I'm so mad!!!
sorry I had to vent.

You're not wrong to be mad, and I don't know what your DH doesn't get about 'We have work that needs to be done here and he's out helping other people with their work'!

Why aren't Bill, Walter, and SIL over at YOUR house helping you?