Vodafone is charging me 1000rs of bill for no usage

I paid vodafone bill and told them to stop it because i lost my sim somwhere in home while cleaning and i came to home and after 2 months i am reciveng threat email from vodafone saying pay bill otherwise we will take legal actions and my cost. i didnt used or my sim is on they are harrasing me to pay bill of rs1000 for no usage and they also dont giveing me proper valid reason. no costumer service agents helping me regarding this and no officers …
my sim vodafone post paid number is :- 7xxxxx5
please do an proper investagtion

Ashfak ali
Raichur 584101, Karnataka
Email: axxxxxxxxxxu@gmail.com