Bharti Airtel (Broadband) — airtel not recognizing my rs. 3183 payment from 2 months

Address:

Gautam Buddh Nagar, Uttar Pradesh, 201307

I paid the 3 month airtel broadband bill rs. 3183 for new airtel broadband connection but airtel is considering payment of rs. 383 only.
The payment of rs. 3183 was made through check #15876 (Axis bank) which was debited from my account on 17/07/2017 and paid to "bharti airtel ltd". I have already provided all the debit details from my account to the airtel staff.
My complain no. 86227770 with airtel (Filed on 12 aug) is still not resolved even after 100's of communications. Though airtel is admitting the problem is on their side but not resolving it from last 3 weeks.
Now, i am getting emails and phone calls for disconnection of my broadband but i have already paid the 3 months bill.
I would request to resolve this issue and put some penalty on airtel for such gross mistakes and causing waste of time and mental harassment to the consumer.

Cheshta
Airtel account no : [protected]
Email id : [protected]@yahoo.co.in