Telkom LTE account not closed - Money being debited on my account

I installed Telkom fibre and during the the installation process the lady said our LTE service will be disconnected after fibre was installed. Well that didn't happen. I then called a call centre and asked a consultant to cancel my LTE service last month. The service has not been cancelled and Telkom is still deducting money from my account. This is terrible as I'm paying for a service I no longer need.