Tata Docomo — new bill generated even after closing the connection

Address:

Bangalore, Karnataka

I raised a cancellation request for the broadband connection[protected] on 02-oct- 2018 and as per customer care executive comment, the connection is closed on 09-oct-2018.

Oct-2018 bill generated on 17-oct 2018 (amount 1297). I made that payment since i used the connection till 2nd of oct.

Now a new bill generated on nov-2018 when the connection is closed on 09-oct-2018.

I responded to customer care and their emails many times. Still no proper solution.

Note:
i already handed over the router and landline phone to executive and at the time of getting the connection, executives informed me that i have to just handover the router and telephone that's ot and there is no additional charges for disconnection. This 844 rs bill is saying exit charge.