I really wana move back but my parents wont let me? i cant take it anymore, read the description please.?

ive been in this place and for 8 months and i really wanna move back,i moved from my home city in canada to this place overseas,its not that everyone is mean to me here, its just life itself, school studies , private school, i cant take it anymore, and i miss my home city alot , ive been have dreams daily about me visiting my friends there, i wake up, i jsut get mad that i find myself in this place again. it makes me wanna puke, this never even happened to me before, if itell my parents about my prbolem theyll just say ill get used to it soon, they have been sayin that for the past 5months, please i have to move back to ontario and i have to convonce my parents to let me go there and live wid my grandma, can u help me