Please help me, adults with more adultier skills.

I'm 20 years old and I sleep like them animals. I cannot be awakened in the middle of an evening nap till you try it aggressively by shaking me a lot lmao or screaming on my face. I go to uni and mostly do not sleep enough for my sleeping requirements because I'm up till 3 for no reason. I live with my parents and a brother and like everyone else, they all have places to be and often leave me in charge so that I take care of the house because I totally ain't got nowhere to be after I come back from uni as its exhausting AF already. So the problem is that since childhood I've got a mad sleeping problem, I'm always sleepy because I've always been someone who stays up the night so it's only obvious that I'll be dead sleepy around 6-8 even if I try hard not to sleep but these are actually the hours my family members start coming back home all banging the doors and shit frustrated AF because I'm not opening the door which is frustrating to me as well. God knows that i, someone who sleeps like that cannot wake up hearing then distant door bangs no matter how aggressive and you really would not like someone scream hard at your face as you wake up with terror. Recently, Dad got so annoyed and tried to climb up the balcony and stuff and got himself injured because he was outside banging the doors for at least 1 hr and everyone's like screaming real hard at me saying what kind of person am I even? I think the same. These things were still okay when I was a kid but since I am a lot older I want to take some responsibility and not repeat these childish behaviours no matter what. My parents already don't take me seriously and I unknowingly keep proving my existence to be a pain in the ass from them. Can you guys please suggest me what can I do to just be there to open the doors for them at least. Phone calls I'm not sure would work because mostly my phone is on silent. FYI I come back from uni at 4 and after aggressively not trying to sleep, I actually sleep out of nowhere near 6-7. It's also winters and so chilly I'm always in the covers and want to sleep all the time. Also, does this whole thing happens with anyone else and is normal?