give sb some of his own medicine

I cannot tolerate someone bullying our younger sister.expecially,if that,my lover will be sad and angry,a banch of fool,i sms her to treat them as rubbish,i have never abuse anyone,including the person ever bullied me,but today i find i must resist,i can't stand anyone to use abuse language at me and my families.i was afraid of invoving the Innocent Manever,but now i find they didn't considerate more,why i do ?never standing for anyone,i'll give sb some of his own medicine for the rubbish.