Pathetic service

In 2016 i cancelled my Data and laptop contract as the contract expired. Telkom did not cancel and charged me for the Data up until now, further more that service was not connected anymore as well. When i realized this i informed Telkom straight away, through emails, phone calls and through the telkom chat. No one has been able to finalize this matter yet still get charged for the data i dont have. This matter has been ongoing for months with no response from any of their staff. It is funny how they still deduct the money off my account for something i dont have but wont refund my money as quickly as they take it. Pathetic service . I hope that someone will at least contact me now