Are they doing this out of spite?

This is gonna be a long post so bear with me.

My husband and I lived with his parents for 6 months almost 2 years ago and we paid half for them to put up a metal covered area for my husband and I to park our new vehicles under since it hails here a lot. We ended up moving out and left it for them to have I guess. Well my husband joined the military and they begged me to move back in with them with my son for 6 months while he went through basic and AIT. Well I’ve been here since October and let me tell you it’s been hell. Absolute hell. Idk what changed, but they have just been rude to me in so many ways. They overstep their boundaries a lot also. 1st example of them being just rude was that when I moved back in they let me park my car under the covered area but they put their old run down rv and their beetle bug under it too. Which left me only a little bit of space to be parked under it. My husbands truck has been left out in the weather because they refuse to move their junk to give him room for his truck. Oh well we got over it. Well, this past weekend they decided to go buy materials since they’re adding on to their house and it’s supposed to rain but they jumped the gun and bought the materials knowing they had no place to put them. Well they text me saying can you move your car if it’s parked under the carport Bc we need that space to park our trailer full of whatever they bought. It pissed me off but I can’t say anything whatever. So now my car is left outside too. 2nd example is I left to go to my orthodontist appt this am and my husbands mom was home painting their add on well I left the door unlocked bc I don’t have a house key. I’ve been here months and no house key. Well she locks it and I come home carrying my son and a couple bags and the door is locked so I have to go all the way around through a gate just to get to the other door because she’s busy painting. I think she did it out of spite. 3rd example of their rudeness is they eat my food that I buy. I bought a 4 pack yogurt and she ate one. Didn’t even mention it to me or ask for it. Had she asked I would have said yes. They also ate my pizza I had in the freezer. I haven’t spoken up but it’s getting on my nerves.

4th example is they try and tell me what to do with my son. He’s starting to walk and they keep demanding I go 70 miles to this stupid store that sells shoes for babies that are learning to walk. They say they did it in the olden days so my son must have a pair. Ok then you go buy them. I also mentioned buying my son an outdoor swing and she is like no we will buy it. I was like you don’t have to. I’ll get it. So I go lookin all around town for it and I can’t find it and she’s like I told you we will get it. Well she told me this a month ago and still no swing and I’m about to order it online so I tell her and she’s like no I want to get it for him. Then again during Christmas I specifically stated I wanted to buy him a stocking for a tradition. Well she goes to the store before me and buys one! Like really!?!? I just didn’t say anything bc it’s so small and it can stay here because we are moving across the country anyways and I can buy him the one I originally wanted to buy him anyways. It just annoys me. Idk how much longer I can put up with it. Thankfully we will be moving in May but omg idk if I can hold my tongue any longer. I’ve already done it for almost 5 months.