VOX Continued shocking service

So after my almost 1 year ordeal with VOX and the excessively poor communications received after the numerous emails and call made. They charged me over R5000 for hardware after account was closed last year and settled in full with all relevant proof sent and no reply. I then sent through the hardware I had which they never bothered to collect or contact me regarding collection. My name has been blacklisted on there system however all forms of communication have gone out from myself including all calls and statements from my bank account showing settlements as per invoice received. Now apparently I still owe over R2000 my Vuma line has not been disconnected although account was a closed last year May which means I cannot go with a new ISP using Vuma line due to VOX not disconnecting my line. I have never in my entire life experienced such disgusting and shocking level of service and they should be closed down and should not be able to supply Internet services to people my rating 1-10 1 being poor I would give them 0. I sent mails to both Netisha and Monique from VOX as per norm no response.