Terrible service

Telkom handed over my account without any communication. My monthly installment is R100 for a sim data but in April 2025 they deducted 219 instead of the correct amount. I called in and i was told about a subscription that I know nothing about. The next thing 307 it s deducted again from the account which I dispute both instances. I then receive an sms that my account is with Nudebt. This is unacceptable Telkom, I want my refund and my name cleared. How can u add subscriptions if the number is mainly used for data? I have decided to terminate after 3/4 years of using their services