Problems with Telkom in respect of my internet connection being suspended

On the 31st October 2019 my debit order for my Telkom Internet subscription came off my my bank account as it has been doing for the last 11 years. On the 21st of November 2019 my internet line was suspended and a Telkom consultant advised me that my debit order had not been received. I then went to my bank and drew a statement of my account that reflected that my debit order had been deducted and had not been returned to the bank. I went to a Telkom office and they e mailed the documents to their billing department. The following day my internet connection was restored. At the end of November I noticed that my debit order had not been deducted. I phoned the Telkom Billing Department and the consultant advised me that as the October 2019 debit order does not reflect on my account the system will not generate a debit order for the next month. The following day my internet connection was again suspended. I then paid the November 2019 subscription to Telkom in cash and phoned the billing department and advised them thereof. The following day my internet connection was again restored. On 14 December 2019 my internet connection was once again suspended. I phoned the Telkom Billing Department again and i was once again told it is because they have not received my October 2019 payment. I went to Nedbank and received a statement that the debit order for October 2019 was successful and the lady at the bank wrote a note on the statement to this effect. I once again went to a Telkom office and the e mailed the document to the billing department. I spoke to a consultant at the billing department and the said that they would escalate the matter to their superiors and that somebody would contact me but nobody contacted me. On 20 November 2019 I again spoke to a consultant at the billing department and was again advised that they would escalate the matter to their superiors and that somebody would contact me. I now do not know what I can do to have my internet connection restored as I need it. Nobody from Telkom Billing Department phones me back to try and resolve problem