Vodafone India — deactivation of my vodafone number [protected]

I had submitted a request in a vodafone store to deactivate vodafone number [protected] (Post paid) two months back. My bill is still getting generated. I had already paid 1800inr as full and final settlement. This time again i have received a bill of 2100inr. Since i have not paid amount of 2100inr, my outgoing on a different vodafone number ([protected]) is barred.

I am 65 years old. This is pure harassment. Customer care not helping. Please help in getting the number [protected] deactivated. I cant afford to pay 2100inr again.