Unsatisfatory customer service from Telkom mobile

Since February 2020 I have been trying to get Telkom to sort out my monthly bill wich has not been resolved till today. I discovered two additional contracts were added to my bill of which I don't knows anything about. when I enquired from them they told me that two contract were taken under my name in December and that surprised me since when you take a contract with them you produce an ID and proof of residence but they couldn't give an explanation. I went and made an affidavit and sent it but up until today every time I call Telkom I'm told that the matter is still under investigation and yet they keep on debiting my account with the amount including the two unknown number else my line is disconnected if I don't pay the amount.