Bad bad Telkom Mobile services

About 7 years ago I had a Telkom mobile contract. In 2017 and 2018 I send them the cancelation form. Years before that I said to them over the phone to stop it. I don't even have the phone or Sim card anymore. Then they still took every month money from my account. Then in 2018 I phoned again and then the lady said I must stop it on the Telkom app. Then I went on the app. They said that I don't have any contracts with them. But they still take my money. I phoned again an a other lady said I must send the cancelation form again. So I did. Heard not a thing of them but they still take my money from the bank. They will pay me everything back from 2017 when I first send the cancelation form!! My nr is to contact me ********** 178 ID nr ********** 101080