Trying to cancel a TV Licence - no luck!

I am trying to cancel my tv licence, when phoning the call center, all they can tell me is the invoice for the new licence has been issued and must be paid!!! When I ask to speak to a manager I get LAUGHED AT!!!! The operator could not tell me why I must keep paying for something that I now longer have. My tv broke, I have a report, an affidavit all send to the tvlic,*** on 14 Oct 2019, with no response!!!! I have been paying for years for a tv licence, when the tv was not connected to any aerial or dish. Can somebody help sort this matter.