TV licensing behave as though everyone has a tv and therefore requires a licence. They know as well as we do that this is not the case; however TVL have a remit to sell as many licences as possible and boy, do we know it.
The fact that owning a television isn't and has never been a licensing requirement is largely lost on the public and, I reckon, not a few magistrates too and is testament to the power of non-stop pushy marketing coupled with lifelong badgering and harassing by the world's best in the art - The BBC and its trademarked sidekick, Television Licensing.
Threatening language and behaviour, implied physical threats and a few lies tossed in here and there are TVL's stock-in-trade marketing methods for which they are famed.
They want to do business with you whether you want to do business with them or not.