Bharat Sanchar Nigam [BSNL] — landline not functioning(dead)

I am useing landline of bsnl(calcutta telephones) more than 20 years.last one month my landline not working(dead). on 7th may 2019 i had been lodge a docket (no. [protected]), but 1st june 2019 i received amessage on my mobile that my complaint has been resolved.butthe problem still persists, so further i lodged a docket ([protected]) through your customer care exicutive on 2nd june 2019. yesterday i received a message that june 2019 bill has been generated and amount is rs. 352.
so i request you immediately resolve my complaint and waive the last telephone bill.