COMLAINT REGARDING CELL PHONE (MODEL 6700 CLASSIC) HAVING JOB SHHET NO 170433527/100724/14

I HAD PURCHASED MOBILE PHONE (6700 CLASSIC.IMEI NO 356943031792204 IN NOVEMBER 2009.THE PROBLEM OCCURED IN CELL PHONE (BALNK DISPLAY, RESTARTS/REBOOTIN AS MENTIONED IN JOBSHEET REFFERED ABOVE.I HAD LODDGED COMPLAINTS IN NOKIA CARE CENTRE (SERVICE CENTRE NAME A.A.ELECTRONICS 106B-SUN RIZE PLAZA, UPSTAIRS BAKE WELL TWO TIMES 1.e 24/07/2010 & 10/08/2010.THE PROBLEM IS STILL LYING PENDING.I REQUEST TO LOOK IN TO MATTER SERIOUSLY. SOLVE THE PROBLEM