Billed even though I did not sign up

In my previous post I explained how Cartrack just started billing me after buying a vehicle. I have sent countless mails requesting the contract and the debit order mandate I signed but it can't be produced or they just ignore my requests. They did however admit they were at fault but still expect me to pay a premium for something I did not want / need. In my previous post on Hellopeter I said that I will only correspond via email yet they phone me a couple of times a day, keep sending me threatening Whatsapps, SMSs and emails that I owe them money. NO I DON'T - I did not sign up for your service so I don't owe you anything.

I sent emails to the CEO escalation, ethics, accounts, customer service, Dimakatso, Pretty, Tebatso and No-one replies.