This company are *****'s

There's this marketing company who had an audacity to go into my account and debit R 89.00 after I have told them that they shouldn't go debit my account because I don't know who they are and what do they do, they sent me an sms on the 13th February 2019 saying that they set an R 89.00 debit order I took my phone and call them and told they shouldn't debit my account funny yesterday I got an sms from my bank notifying of the R 89.00 debit order that went off. I want my money today because this thing of this companies going through our accounts messes up with our credit profile because they don't refund us we go and reverse them which it has a negative impact.