MY DAILY CLASSIC PVP KILLS ARE REDUCING

MY ID IS IM_NOOBU AND I WAS FIRST IN CLASS PVP IN DAILY WITH 1000+KILLS BUT THEN MY KILLS REDUCED TO 950 OR SOETHING I PLAYED AND AGAIN GOT MORE THAN 988 KILLS TO COME FIRST BUT THEN AGAIN WHEN I REJOINED MY KILLS REDUCED.KINDLY PLEASE SOLVE THIS AND GIVE MY POSITION AND KILLS BACK. THANK YOU