Somebody call me a paski, even though in from Britain?

I live in England, I have dark brown hair and light medium skin, dark brown eyes too. There is a roomer going about me that another girl called me a paski. my friend well she is going out with this guy who makes trouble, and she tells people that she doesn't know him. He doesn't like me neither of the girl who suppose of called me a paski. My friend is the one who told me this and said that her boyfriend was at the park and said that she said I am a paski. Then my friend went and told the whole school that she said I was a paski, then my friend laughs and believes him, but I don't know if she did. My friend believe every word that he says, he make other stuff about me aswell , but not as bad as this. She deny that she doesn't know him when she does and she makes trouble now.

and told all my friends and they felt sorry for me.

Should I say to the girl who suppose of called me a paski, and tell her my friend said it, cos she has all the details then I am going to take it further.

THANKS