Hathway Cable & Datacom — blackmailing for the payment

Address:	Hyderabad, Andhra Pradesh
Website:	hathway.com

I have an hathway broadband connection, since 2 years i am not using that account because service is not good. So i accled to customer care to cancel my account long back only they said they will close the account, after that i forgot about that but last month i got a call from advocate about the payment due hathway is going to file the criminal case against me.
Actually that is prepaid connection, whenever i used month starting only i have paid but without closing the account they are Blackmailing for the payment.

Because of they blacmail i paid 1600 rs but still they didn't close my account. multiple times i called to customer care evry time they will say we raise the request to close the account.

What i need to do on this, please help me.