Vodafone India — billing for discontinued number

Address:

Mumbai City, Maharashtra, 400005

My tel no [protected] was disconnected by me personally going to the vodafone pm road gallery on 22nd feb, 2019 vide docket number [protected].
Was given to understand that the number would be disconnected in 7 days by then..
Am shocked to say that have been getting 50 plus calls a day fro vodafone representatives and messages threatening to disconnect my other mobile numbers for non payment of dues until april 2019..
How can i pay dues for march and april when my phone is disconnected from feb 22nd..
Need closure to this very quickly
Regards
Vimal
[protected]@gmail.com