Poor Service and ********** debits through my bank account

Telkom has been deductin R200 from my account monthly since 2015 without my knowledge the number they have been billing me for is ***. Called their call center and they advised me to do an affidavit with the Police and should take it any one of their I went to their Gateway Branch on 22 July 2019 and Keenen advised me to call the call center. He attended to a Telkom line and canceled the landline which wasn't done after being cancelation in March. I called the call center on 26th July 2019 at 4.30 pm and spoke to Calvin who requested that I email him all the documents ie affidavit and invoices. He allocated me with a case number which is ***0. He said that he would attend to it. I called on 1 August 2019 and was told by Thembi that the case was still in the queue. I had made several calls prior 22 July 2019 without any success