Airtel — already given cancellation for the broadband connection but still the bill is generating

Address:

ISHA GAYATRI, C-403, GERUGAMBAKKAM MAIN ROAD

Dear sir/ madam,
This is shyamjith, staying at kolappakkam, porur, chennai. And my fixed line no is [protected]. Before covid 19 problem starts (March 18th) i have traveled down to my hometown because my mother-in-law had a stock.
So from 18th onward i was not using the airtel broadband net service. Also i have intimated (April 8th) aitel to cancel (Disconnect) my broadband service. But from their side they didnt take any action. Also my bill was 943/- become 2003/- now they send me the 3rd month bill which is generated 3, 064.22/-
I request you take an action against this. Also let me pay the minimum amount of 943/-
Thanking you
Shyamjith pp
[protected]