[Resolved]  Vodafone, 325 Postpaid Plan — bill

I have applied for disconnection of my postpaid number two times by giving applications but still i am getting the bill at my home, i doesn't have any due amount and have paid each penny of bill more then two months back, from that time i have not used that number. I don't know why they have not disconnected my number, i will not pay the bill for which i haven't got anything.