Motorola V3C — Motorola Mobiles battery in trouble within 6 months of purchase

MOTOROLA-CDMA V3C Standard 2 NOS
MSN NOS-E14WGM39TZ & E14WGM3545 PURCHASED ON 30.06.2008 (TOTAL OF 5 MOBILES PURCHASED FROM TATA CDMA NOS [protected]-4)
PROBLEM WITH BOTH MOOROAL SETS-BATTERIES STARTED WITHIN 6 MONTHS OF PURCHASE. BOTH BATTERIES REPLACED 24/4/08 & 30/4/08 AFTER MUCH PURSUANCE FROM AUTHORISED SERVICE CENTER ESSEM COMMUNICATIONS, BANGALORE 560011.
WITHIN 2 MONTHS OF REPLACEMENT OF BATTERIES BOTH MOBILES HAVE ALMOST STOPPED WORKING. ONE MOBILE WORKS ONLY SO LONG AS POWER ADAPTER IS ON. VISITS TO YOUR ASC IS OF NO USE AS THERE IS NO STOCK OF BATTERIES. MOREOVER YOUR MOBILES ARE MANUFACTURED TO WORK FOR JUST 12 MONTHS TILL THE WARRANTY DATE. THAT IS THE TRICK OF YOUR COMPANY. IF YOU DO NOT PAY ANY HEED TO THIS COMPLAINT YOU WILL SEE US IN THE COURT. WE ARE REALLY SUFFERING BY YOUR DEFECTIVE SETS. WE REQUEST YOU TO REPLACE THE SAME BY A BETTER SET THAN THIS. WE ARE VERY VERY UNSATISFIED AND UNHAPPY.