hes really nasty he says stuff like 'id dance on your grave if u were dead' and 'go die.today.painfully.slowly' also if i see him round my house, he covers his face and turns the other way. 

he gets my little brother and sister to gang up on me too...my mum just ignores the situation WHICH DOES NOT HELPPPP!

what can i do? he wont listen to me at all and always calls me stupid and pointless and a waste of space.

plz someone help me?