Bharat Sanchar Nigam [BSNL] — telephone no.[protected] status not updated for the surrender of broadband internet and telephone connection

Address:	603319
Website:	chennai.bsnl.co.in/index.html

Dear Sir/Madam,
This is to inform that my mother age 59 (heart patient) had submitted hard copy in written to surrender the Broadband and Telephone connection for the Telephone number 27528119, two times after April 23, 2018 at Melmaruvathur BSNL office-603319.
In regards to follow up, my mother visited second time and spoken to the Junior Engineer regarding the disconnection of Broadband and Telephone connection. But no action has been taken. During customer complaint enquiry, I haven't provided the phone number of the BSNL Top executive contacts.
If you check the data downloaded and total calls dialed starting from April 23, 2018, then it will be zero. I would like to notice the officials in BSNL melmaruvathur 603319 office haven't updated the records after surrender. Called many time no response.
I have got a notice to pay Rs.3724 for the non payment of bills. How can I take responsible for this events. The officials are not responding.
Please update the records so that I get zero payable bills by detecting the refund amount for one month, since there is only one month delay. This has been discussed with the Junior Engineer at BSNL office melmaruvathur 603319.