Mana Games

[nikuson]

Hi everybody, i am nikuson from VietNam and i have a problem:
- Federer is the Goat from India use my name to play online... he is quiter, cheater, unfair player...he usually retire whenever the opponent lead him with 1 or 2 break, he usually do it with me so i don't cancel his elo penanty and he hates me...hmm...then he starts use my name to play online and say bad me to other people( he can't and never beat me but i beat him many time ). please help me because he will go on use my name, thanks!!!
For more infomation: his player played about 270 match and he have about 2500 elo