Airtel — charging bill even connection disclosed

Address:

Indore, Madhya Pradesh, 452010

My landline no[protected] & account no.[protected]
I have made a complain regarding disconnection on 3 april 2018. They have told me that your connection will been get disconnected & no bill generation will be there. But i have called the team after 7-8 days they inform me that your disconnection request been cancelled. Again i have made a complaint for disconnection then they have disconnect my connection. I have told him that who will be responsible for the bill than they have told me that there will be no bill generation but now they have send me the bill of 527.59 rupees.
The airtel company is totally fraud.