Unauthorized Debit order

I have been having R95 and R115 Unauthorized debit orders from blaq rand communication. I have never authorized this company to deduct on my account. When contacting standard bank they say they have no control over those transactions, Even after putting a stop order these transactions still go through!!! How come other banks where able to resolve this issue?? what is the use of banking with you when my finances are not secure with you?? I find it really appalling that companies have access to our finances and Standard bank does not want to take responsibility. Deal with this unauthorized transactions issue and retain your clients. This is really unbelievable!!!