Hathway — Disconnect my current internet service and collect the wifi router

Address:

Hathway Chennai

Since the corona i had to move out of chennai to hyderabad. So i wanted to cancel my existing hathway account( [protected]). However they are not responding on customer care call. I had to mail them and i did mail them but got a automated response and no further communication. I am afraid that they might want to escalate the situation in future. I tried my best to communicate and have no more ideas on how to get them to disconnect my service. Please collect the router and end this situation. There are no more dues to pay too.