Tikona — Threat call against court case

I live in Ahmedabad and used tikona for an year and half. Sent an email to them to discontinue the connection so just in reply to that recieved an email to wait. After a month i started having multiple calls and emails about my pending bill from computer generated destinations where you can't talk back or reply . On 4th September got a demand notice email about amount to be paid. Today got a threatening call from an advocate that a civil complaint has been filed against me. If i don't pay i have to go to delhi court. So i talked and tried reasoning with her and asked her to send me the soft copy of the complaint but she fooled me with her talk and convinced me to pay the amount. I asked her the amount, in answer she told me an amount which was different from the demand notice. Still i logged in the tikona application and went to quick pay option where the amount was 680.52. There is no editing option so i paid amount. And sent her the receipt. She said you are suppose to pay more. I said its not showing more. She said go the app again and see. I logged in again and then saw the amount was now 1947. So i asked why this much so she said that its the company policy and i have to pay. I asked to send me an email regarding this amount and bifurcation of the amount. She again started threatening me and cut my call. After 15 minutes she called again and gave a case detail and told me this is your case detail now will see you in court. I have the dates of the email i did to them. I have bill payment msg also. And an email from company also demanding the amount 681. I asked the lady to give a contact number of a local person or a person who can guide me through this. But she denied and threatened me to see me in court. Even after paying the amount she has filed a said case against me.