Telkom has ruined my account and my good name through TERRIBLE CUSTOMER SERVICE

Telkom ruined my entire setup when I moved premises in May 2017. I've had 2 callouts for repairs and they can't even tell me what my new number is! My internet ADSL has been off since I moved, my accounts are going to a different person (some old man who keeps phoning me) you allocated his number to me. My old account is still registered to my old house, my old number and old ADSL is still on my old address and is un-usable. I diligintely paid my accounts for YEARS and have received NO service since May 2017. I stopped paying Telkom in September 2017 (that's 5 months of paying for NO services rendered) but you kept charging me and now I'm getting phoned by lawyers to blacklist me!!!!!! PLUS you have been incorrectly allocating my payments to the wrong number! I won't pay for a service I have not received since May! We have had no internet or phone line since May 2017. My online account is still registered to my old number and I can even log in! But no accounts are linked or listed anymore, This is madness. This is such a massive mess-up, you can't even fix it and all my money paid has disappeared into a black administrative hole PLUS you are threatening to blacklist me!!!??? All I want is for a technician to come to my house and fix this. Oh and then it gets even better, your technical faults division tells me its a problem for the sales division and the the sales division tells me to order a new line - guess what, I now have 2 accounts, neither of which even work. I'm not only disgusted but you've put me into a legal mess too.