Frustrated Customer

My mother has a landline that has been faulty since 2017. She then decided to cancel and close the account in January 2018. We contacted customer care line several times and have not been assisted yet Telkom continues to deduct an amount of R217.89 every month. My mother resides in Mthatha and there is no Telkom store. This is frustrating now as she cannot continue paying for what she has not been using for the past 2 years. We have also tried cancelling online but their website is not user friendly at all. We need this matter resolved urgently