Cancelled Account Harrassment

In 2014 I cancelled my TC licence as my TV was irreperable since Oct 2013.I received cancellation confirmation. Suddenly in May 2017 I get a renewal notice sent despite me not ever having bought a new TV or re-opening the account! I wrote back and attached the cancellation letter sent by themselves but they answered and accused me of having paid the account in 2016 - which I did not do! I told them their accounts people must have made an error and allocated it to the wrong account - they refused to listen. I received a letter dated 17 July from Sylvia Tladi: Head of TV Licence Division stating it will be taken up by lawayers if payment is not received by 31 Aug 2017.I have since rep**** twice on 26 Jul 2017 and again 10 Aug 2017 with all relevant attachments of original Affidavit of 2014, cancellation confirmation from SABC of account, as well as a new affidavit signed by me earlier in Aug 2017 stating again that I do not have a TV set and I had cancelled in 2014. I told them they can send an inspector to check. Since then, despite me sending my reply to two e-mails: tvlic.info@ sabc.co.za as well as SABCrenewals I have heard nothing - I suppose they will just send the lawyer's letter withour doing due diligence on what I've sent them. It's a simple case for them to trace from whose bank account the payment in 2016 was received from, it sure wasn't mine! What a waste of time, effort and money for me as I am doing all this running around for affidavits etc without a car (****** October last year). I need confirmation from SABC they have cancelled the account properly this time as it should have been the first time around where it could no longer be accessed by anyone.