Tikona — Disconnection request not accepting and not disconnecting internet

I got tikona connection on 10/feb/20 with six month plan in Visakhapatnam, maddilapalem. I used 1.5 months and then due to lock down, I shifted to. My home town on July 5th and I called the tikona agent to stop the connection but they said to mail Customer care tikona [protected]@tikona.in . I mailed for request to stopy connection as I'm shifted from Visakhapatnam. I mailed them so many times from my registered email id no response from them till date. And the agents are saying the same to mail customer care but there is no response from them. But they are sending due bills and asking to pay bill for next 6 months. But not accepting my disconnection request.