failing exam on purpose because of parents

so i take physics, maths computer science and further maths, i have been trying to revise for the past 2 months because i have my ucas mocks coming up and i need an A*A*AA because i want to apply to places like imperial and cambridge, and the thing is i know i can get the grades and i just need a little support from my parents but the thing is they just dont care. I am someone who revises for a long period of time and takes short breaks because thats the only way i can revise, but my parents dont understand that, everytime i try to revise and i mean everytime, my mom yells for me to do something, my mom never went to sixth form and didnt persue higher education, she comes from a developing country in Africa and had to quit school to make money for her and her family and because of that, all she knows is how to cook and take care of ones family but now she is trying to push her beliefs unto me that studying wont get you anywhere and that a woman needs to know how to cook, take care of her family and clean, i am the only one in my household who cleans, like the bathroom, im always washing dishes because im supposedly the familys dishwasher, im always cleaning my living room basically my whole house, and the only thing i dont do it cook because i know the moment i learn to do that, everything will be put on me to do, im also forced to take care of my little brother whos suffering form developmental issues so even when im not doing chores, im playing babysitter and its mentally draining cause hes either causing trouble, yelling screaming throwing stuff wetting everywhere but its always me who has to take care of everything. my dad is another case, he did a degree and masters and so he knows how important it is, he at times defends me when my mom starts her nonsense, but he is the worse of them all, he knows how important all this is to me so he plays white knight until something goes wrong in the house, if there's a spot i forgot to clean or if my siblings cause i mess he berates me, sais whatever he wants calls me names and stuff and always puts me down and he gets mad over the smallest things, even if im studying for an important test or anything like that, i have to put everything aside and go do what they want and its truly unfair because im the only one they do this to. its like the moment they sense that im trying to do something to better my life, they always want to do something to bring me down and my mom once said something that confirmed all of this. I have been trying my hardest to revise for the past 2 months, its now 16 days to my mocks, i know how much of an improvement i can make but with all this going on i think my grades may drop but even so i want to show them that they have caused all of this, i plan not to write anything for the papers im given and submit them blankly and i plan to use all of that against them, i know my teachers will raise eyebrows at all of this because my grades have been ranging froms As and Bs so they will question everything and also bring my parents in and thats what i want to happen, also luckily for maths, the teachers allow students who have failed or gotten a low mark when they believe can do well a retest and thats why im not too worried about this but even if thats not possible, ill just try harder for alevels and wont even bother myself showing up at home because i would be 18 then, so is it right for me to do all of this? sorry for spelling mistakes, im just too upset whilst writing this, im legit crying and shi
edit - im still revising on the side, im using every chance i can get to do that

so i take physics, maths computer science and further maths, i have been trying to revise for the past 2 months because i have my ucas mocks coming up and i need an A*A*AA because i want to apply to places like imperial and cambridge, and the thing is i know i can get the grades and i just need a little support from my parents but the thing is they just dont care. I am someone who revises for a long period of time and takes short breaks because thats the only way i can revise, but my parents dont understand that, everytime i try to revise and i mean everytime, my mom yells for me to do something, my mom never went to sixth form and didnt persue higher education, she comes from a developing country in Africa and had to quit school to make money for her and her family and because of that, all she knows is how to cook and take care of ones family but now she is trying to push her beliefs unto me that studying wont get you anywhere and that a woman needs to know how to cook, take care of her family and clean, i am the only one in my household who cleans, like the bathroom, im always washing dishes because im supposedly the familys dishwasher, im always cleaning my living room basically my whole house, and the only thing i dont do it cook because i know the moment i learn to do that, everything will be put on me to do, im also forced to take care of my little brother whos suffering form developmental issues so even when im not doing chores, im playing babysitter and its mentally draining cause hes either causing trouble, yelling screaming throwing stuff wetting everywhere but its always me who has to take care of everything. my dad is another case, he did a degree and masters and so he knows how important it is, he at times defends me when my mom starts her nonsense, but he is the worse of them all, he knows how important all this is to me so he plays white knight until something goes wrong in the house, if there's a spot i forgot to clean or if my siblings cause i mess he berates me, sais whatever he wants calls me names and stuff and always puts me down and he gets mad over the smallest things, even if im studying for an important test or anything like that, i have to put everything aside and go do what they want and its truly unfair because im the only one they do this to. its like the moment they sense that im trying to do something to better my life, they always want to do something to bring me down and my mom once said something that confirmed all of this. I have been trying my hardest to revise for the past 2 months, its now 16 days to my mocks, i know how much of an improvement i can make but with all this going on i think my grades may drop but even so i want to show them that they have caused all of this, i plan not to write anything for the papers im given and submit them blankly and i plan to use all of that against them, i know my teachers will raise eyebrows at all of this because my grades have been ranging froms As and Bs so they will question everything and also bring my parents in and thats what i want to happen, also luckily for maths, the teachers allow students who have failed or gotten a low mark when they believe can do well a retest and thats why im not too worried about this but even if thats not possible, ill just try harder for alevels and wont even bother myself showing up at home because i would be 18 then, so is it right for me to do all of this? sorry for spelling mistakes, im just too upset whilst writing this, im legit crying and shi
edit - im still revising on the side, im using every chance i can get to do that