My family is a obstacle in my academic life.?

Ive had a rough year financially...my parents are divorced and both of them kicked me out last year.anyways I am living with my grandparents and basically Ive been out of school because my domestic life is unstable.I am 20 years old and finally I got back on my feet..and I am back in college ..i was gone for a year and a half....I have had to pay everything out of my pocket..my job has a crazy schedule many times im working till 130 am and then going to school for 730....basically im waking up @ 6am...one mornin i finish work at 3am and woke up for 6am and i got really sick..i kno my job is big obstacle in my life but im workin on gettin a new one..until then i gotta tough it out.......so anyways financially its hard for me and im making it the best i can...my grandparents who relatively young ...theyre in their early 60's are retired.and i also live with two of my uncles...one uncle is always workin the other one whenever hes home from work hes playing video game...i mean its not fair ..that the little free time i have thy constantly undermine me and yell at me to clean the house and they have no regard for me in school...its so hard to study when they always always want the house clean everyday top notch....i mean im grateful for them allowing me to live there...but its ridiculous and hard to work with...whenever im doin hw they get mad that im not cleanin the house...when they ask me to clean the house they get mad and claim im bein rude because i state i have hw to do....please help! Thanks