Unauthorized debit order

I had to close and re-open my account due to unauthorized debit orders on my account and I thought that would solve the problem. On the 15 February 2018 I was checking my bank statement and I noticed R89.00 debited on my account from a company called Shaz marketing. I reversed the debit order from my phone and stopped it . Again on the 16th February another debit order of R97.00 from Oversure was done on my account and I reversed that amount again.

I feel like I am the one who is losing here as the bank gains R15.00 every time I reverse these unauthorized debit orders. This is becoming common and the banks are not confirming these debit orders with us as clients.

I am very frustrated at this point as I feel this will not stop please can I get some advise or assistance on what to do with these unauthorized debits.