sir, i have nokia mobile in which cell isBL-5C SERIES

I HAVE COMPLAINED ON NOKIA. COM.IN WHICH COMPANY ACCEPTED THAT IT IS REPLACEABLE.ON DATED 15TH AGUST2007. SINCE THEN I WENT TO NOKIA AGENCY .BORING CANAL ROAD, PATNA 4 TIMES. BUT THE STAFF OF NOKIA REFUSED TO REPLACE THE SAME IN IRRITATING MANNER.SL. NO OF CELL IS0670400363563no21712606625.