Telkom takes my money and I'm not even a customer

I contacted Telkom about fixed LTE a few years ago and had to wait almost a year for them to contact me after completing the online form. In the mean time I went with another service provider and got helped quickly. It has been years since I last spoke to Telkom and I have not used any Telkom services since then. I do not have any Telkom sim cards or devices, I did not sign for anything, and I did not authorize a debit order on my account. But for some reason they started debiting my account in October. I stopped the debit order, but they put it through again with different reference numbers. I reported the fault, got a reference number and now, almost a month later, heard that there is no feedback and no timeline for their "investigation". So Telkom are fleecing people who aren't even their clients during the pandemic and they are not keen on helping you get your money back. I did not do business with Telkom and after this, never will. I am still waiting on their reply.