Bharat Sanchar Nigam [BSNL] — over surrender of my landline connection

Address:

27/A/1, Doctor Bagan Lane. Serampore, Hooghly., Hooghly, West Bengal, 712 203

Very sorry to inform you that, my landline connection is disconnected. And the telephone handset was surrendered on 03-11-19. Still monthly rent for nov'2019 was deducted directthrough ecs.
Further one sms received last night saying, the bill for dec'2019 is generated for payment.
My request is to stop this bill deducting practice, when customer already surrendered his connection.
Telephone no.[protected]
Consumer : nandita sinha
W. O. No. [protected]
Thanks and regards
= nandita sinha