Consumer Redressal

I was using services of M/s Tata Teliservices till May 2012. In the month of May 2012 I visited their office at KLK building and requested them to close my account. They informed me that i have to pay the billed and unbilled amount. On my request they told me the amount as Rs.1615. I paid the amount same day and showed them the reciept and requested to initiate the process. When i recieved the bill for next month i enquired with the call center person and came to know that the request was not taken. I visited the KLK building office and enquired. They checked their system and told me that the complaint has not been registered and aplogized to me and told me that they will takeup this issue and close it as quickly as possible. I got some calls from their executives for confirming the cancellation. Even after that the bill has been generated. When they called me for the payment i told the issue. I recieved a Demand Notice from one of their Lawers i explained the issue to him. Now i am getting threatening SMS saying that they will file the case in Lok Adalat.