Airtel — Airtel WIFI postpaid

I had WiFi connection of Airtel [protected]_wifi installed in December 2023 at Bhopal. Since I had to shift to new place (work related) I asked to disconnect the WiFi and take the router back. But non-such response has been given by the team. Customer care is not resolving my problem. They are just transferring calls here and there. They are not providing any option in there designated app to disconnect and returning the router. I have been receiving calls only from customer care and they are like promoting to have new connection. I came back and had new connection, tried to shift or transfer the same connection. But wasn’t assisted for the same. Since they have such a bad service I have been trying to disconnect the my present Airtel connection[protected]_wifi. But they have been giving me the same response. Kindly help regarding the issue, I shall be grateful to you
Thanking you