Annoying sister!!!!!!!!!!?

My sister came about 3 months ago and well everyday shes annoying and doesnt know it much, but anyway heres few. Sometimes when she and my cousin talks bout something and i ask bout it she makes like a joke thing that not really funny like know we just reading in a book but she just wont tell me and theyll laugh i mean i tell her everything and she doesnt even care how i feel because i cant describe but she says it rudely also. And how then shes always shouting like, [my name] do this or do that or hey blah blah blah. And sometimes when the phone rings she likes yell, get the phone! And shes getting bossy.But this started happening few days ago so its liek new about her butshes jist getting really use to me and i dint want that to happen, even sometimes i cry cause im stressed of her and i havent cried till she came. Any advice? I wanna do this without telling how i feel, no physical stuff, and no yelling or ignoring(it hasnt helped) just like if she makes those lame jokes Kinda of like, dats not funny but things like dat. Thnx oh n my sis is older but im more mature.