Parents are going in my house SNOOPING when I’m not home. How do I handle this and confront them?

So for starters, I had my own house. I have 3 kids but I lived in a nice little 2 bedroom, in a nice quiet little neighborhood. My parents lived about 4 blocks away (if that) and never saw us. Lived there for about a year and they had only been to my house two times. Never visited, but expected us to come to their home. Said it was “easier”, how?! I have 3 toddlers! They are in their 40’s with no health issues, there’s no excuse for them not visiting. So anyways, they buy a house 2 houses down from the one they lived in and then tell me that they want someone to take over their rental lease, saying they felt it would be a better fit for my family and give us more space, said it would help me avoid paying a deposit when I decided to move, and then told me I could have their furniture because they got new sets and said “get rid of the stuff you have now, the kids have ruined it anyways” and said it would help avoid me having to rent such a huge uhaul or trailer. Now my parents and I have NEVER had a good relationship so this seemed really kind and made me think they were trying.

I move into the house and it’s got a lot of damage and issue. So I use my money and pay for paint, carpet cleaning, cleaning supplies to REALLY clean it, etc. the guy I am dating offered to fix the trim because it was all RIPPED off the walls. the bathtub faucet was broken so no baths so I’ve been giving my kids showers, the tub has black mold on it and the paint is literally peeling from the shower walls. The toilet doesn’t work, cabinet doors are missing in the kitchen, the cheap countertop in the kitchen is missing in places…should I continue? I know at this point we should have looked at the place before agreeing, but it’s my parents? I’ve never known them to be dirty people so I thought I could trust them. Also I had no where else to go, so I was fucked. Its all fixable stuff so I looked at the positive side, it was more space. So at this point we’re already moving stuff in and the city calls and says it would cost $900 to transfer my utilities over. I don’t have $900 and I don’t understand why it’s that high, so my dad offers to keep the utilities on in his name as long as I pay him. Clearly I’m reliable and trustworthy so I agree. I get moved in, I’m trying to fix stuff up. My bf and I decide to stay 4th of July at his house due to schedules and activities for the kids, he lives an hour away. We leave the AC on because it’s been 112 where we are and we don’t want to come back to a hot house, we had no idea when we’d be back. So then I get a call from my parents yelling at me because my AC is on and said the bill was gonna be sky high. I’m paying it, so what the issue? We come back the next day and it’s 115 degrees in my house because someone turned my AC off. Our house wasn’t cool until the NEXT day. Took over 12 hours for it to cool. I was PISSED because that heat and toddlers isn’t safe nor do they mix AND IM PREGNANT. So August comes and I pay early and some of Septembers in advance. I go to pay my dad the electric and water and my bill was only $300. Where I’m at, that’s extremely cheap. So I easily had the money. I go to my parents because I can’t pay it because the account is under their name and I don’t know the account number so city hall won’t let me pay it for those 2 reasons. Everytime I tried to pay them they said they weren’t home so I couldn’t bring it by. But my two teen brothers were home so I could have easily dropped it off. So then the 15th comes and my parents call me yelling because the utilities are due that day and they don’t have the money. I remind them I’ve TRIED to pay them NUMEROUS times. My dad calls me a retard when I give him the money, I decide at this point I’m sick of his abuse and I’ll be distancing myself from them. My boyfriend and I discuss this and their behavior and attitude towards me and decide that will be moving to his town and we will be getting a bigger house together. The schools are better, we know people there, My kids have friends there and it’s better nursing jobs there and my parents won’t be close by. My parents find out and are livid and tell me that since my names not on the lease I can get my stuff out ASAP and they’ll be ending their lease. I say okay because I know them, they want me to cower down and beg them not to kick me out and I’m not doing it. This clearly pisses them off and then they tell me I can go ahead and leave the furniture because they sold it to someone else. When I remind them they GAVE it to ME, they deny it and said they were just using my house as storage and they NEVER said that. I have witnesses, but okay. I tell them they can take it back, no biggie. Now mind you at this point I am now staying at my boyfriends house because my kid is in school here and we’re trying to make our lives normal and stick to our routine and schedule. We haven’t been at our house since early august. Then my stepmom texts me and says “You need to learn how to be clean and keep your house in order because we are here and there’s 2 bloody tampons on the kitchen floor and your house is messy and it’s disgusting. We would have never let you live here had we known you live this way.” I immediately called her a liar and asked for proof because I’m pregnant so they aren’t mine and shouldn’t have been there and why are they in my house and who’s been there because they are the only ones with a key. I don’t even have a key and I’m paying rent! I also said to ask my brothers if they’ve been having girls there and they said no. I believe them because they wouldn’t lie to me, my brothers and I are close and they’ve admitted to having girls in my house before. They know I won’t rat them out, I’ll just ask them to please ask next time and to be safe and respect my home. I’m their big sister, not mom. I will not try to control them but just help them be smart, because teenagers will do what teenagers want. Anyways now they’re saying I need to have my stuff out this weekend and I told them no. I’m wanting to say something to them about going in the house while my stuff is there. I paid rent, they shouldn’t be going in FOR ANY REASON. How do I ask them to stop?