Unauthorised Debit on Account

I see that I am not the only person that this has happened to but, have just seen an unauthorised debit go of my account for RCCS BOS J ***. <br> <br> An amount of R423 was debited without my knowledge. I would like to know how this is happening and for ABSA to reverse the debit order returning the amount to my account.<br> <br> Please get back to me.<br>