Nokia Care — Replacement of nokia charger

Address:	Kolkata, West Bengal, 700026
Website:	nokia care

I have purchased one NOKIA handset on 8th July.2005 but after the couple of days its charger was not working. On 13th Oct, 2015 I had given that charger to the Nokia care at ARYA INFOTECH (81/A, S.P.Mukherjee Road, Kolkata – 700026. Phone no. : [protected]) and they informed me that most of the customer are facing problems from this Model's charger and assured me they will repair /replace it within 30-35 days. But today they returned my charger without any specific reason. Again I have visited another Nokia care near Ballygunge (1, Ekdalia Road, Ballygunge, Kolkata - 700019, Near ekdalia evergreen club) and they informed that one PIN has been broken. So, could you pls inform me whose fault is this? Why they have taken so long time and without any verification they were assuring me for replacement – I am very much upset with their behavior.
Pls make necessary arrangement for its replacement as it is under warranty period.
Regards,
Prasanta [protected]