I act out to get attention..

So as you know Christmas is coming around and I had planned to go out with my sister and do some shopping this weekend.Then 2days before Saturday I asked her were we still going and she says oh no my friend is coming over.It upsets me that I get pushed out the way for her friends and then she wonders why I don't like her friends.And when I do act out to get her attention she tells me I'm a dumb, stupid and just cry for no reason.I have told her why I hate her friends but she does not listen to me.My mother does not like to see us fight so she blocks me out no.What do I do?I just sit around with tears in my eyes
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