Telkom mobile poorest of service

I was contacted by Telkom to do an upgrade which sounded good and I took it. I specifically asked the consultant about spend limits and was reassured that there is no spend limit unless I allocate one. When the upgrade went through a automatic spend limit of R1500 was defaulted to my account and because this specific number I am querying was being used by my sister I was not even aware of the spend limit until she made me aware that she can no longer buy prepaid airtime and I went onto the Telkom mobile app to investigate and saw what was happening. I immediately called Telkom to stop it and was advised that it will only take effect the following month. So in the mean time the bill just kept running up. I logged various disputes and spoke to different consultants all promising to look into it and get back to me. To date no one has gotten back to me nothing has been resolved and today Telkom just took money out of my account without my consent. This after I already made a manual payment as I stopped the debit order at the bank because of the active dispute. When I called Telkom today I was told unfortunately there is no dispute logged and there is nothing they can do for me. This is so unacceptable and the poorest of service I have ever experienced. I want to take them to the Ombudsman can someone please advise as what I am to do because they are doing absolutely nothing to help me.