Unauthorized Debit Order - SLZ Comprehensive Gaurdian

I had two (2) unauthorized debits from my ABSA account in October 2018, the 1st and the 30th from SLZ Comprehensive Guardian. The amount debited each time was R89.99. I called their line after the first debit which was difficult to go through the ********** number provided with the SMS that had a reference number. I then searched for their contacts and found the 071 920 4651 which then went through. The consultant promised after taking my reference (which was provided with the sms notifying me of the lodged debit order) and cell number that they will refund the debited amount. I called again mid October and was promised the same thing that the debit will be cancelled and they will refund me. To my surprise another debit went off end of the month (30th October 2018) with no refund of the previous amount that was debited without my concern. I made a third call which I was then successful to go through their ********** number during the first week of November 2018 and went through the same process of empty promises. Still today I have not receive my money back. Another puzzle is that their Name does not appear on my Debit Order list from my ABSA account which brings a challenge with reserving payments. How do they manage to debit our account/s without having their name listed on the Debit Order??? Are the banks also involved in this ****S.....