Telkom Mobile should quit operating in mobile and go back to landlines

I canceled my contract with Telkom in August 2021 and only received notification that it was canceled in October 2021. In November I received an email stating that Telkom tried to debit money from my bank account. Which I logged a call for and I was assured that the matter would be sorted. I received a call in March 2022 from Telkom's Lawyers stating that I owed them R392. How ia this possible. I called the customer service Centre again ans they told me to call back the number that called me and sort it with them. How does this situation make sense. I'm taking the opportunity or rather giving Telkom the opportunity to rectify they're faulton this platform. If this matter is not sorted this may end up becoming much bigger than its supposed to be. My nameis R. Jacobs contact details ***.