Unauthorised debit orders

I noted recently that four unauthorised debit orders went off an ABSA account since 19 May 2018 to 17 July 2018 totalling R3492. On 2 August ABSA reversed the last two debit orders and I was informed that it was from the company Moimooi. On 6 August I spoke to Diane Summerton of Moimooi. She said that the debit orders were for one of their other companies Maddislist. They bought out a company Go2global and allegedly continued with the debit orders for a listing on Go2global. She also mentioned a company Redlink. I have never heard of any of the companies. Diane asked me to send an email with all the details and promised that they will cancel the debit order and refund us. I sent various emails and made many calls which all ended with Alysha a very efficient gatekeeper preventing any communication with Diane. No further feedback and no read reports on my emails. I want to know how my data was made available to these companies and how the debit orders were authorised and verified. I have noted various similar complaints on Hellopeter about this company.