Hathway — Hathway broadband harassment to reactivate account

Hi, I raised raised the request to Hathway to disconnect and dismantle the connection at my home. Neither did the team attend to my request nor they supported. Instead they are calling innumerable number of times every day until I pick the phone and respond, stating it's an auto generated call. And the person representing hathway broadband forces to reactivate. I am not able to believe if this is even ethical?

PLEASE STOP THE CALLS AND DISMANTLE AND TAKE BACK THE ROUTER ASAP. MY ACCOUT DETAILS:[protected].