Debit order dispute

I opened an Fnb account with a purpose,solemnly for a project with no intention to transact. To my surprise when i check my bank statement from 2017 i find unauthorized debit orders of R99 ref RavekingVH . What upsets me is another company debited with a different ref no in Dec and Jan,fortunately i was able to reverse the Jan one,Dec its passed the 40 day(as per fnb). I contacted the debit order dept and they say they cant pick up any more taken off my account from June to Nov 2017 but the money is on my bank statement. The agent kept saying is not on the debit order list but i am asking she checks(and him)the bank statement. I was told to go to the branch they cant assist. Now if i am far from the bank ,i cant be assisted,what if i was out of the country? This service is unacceptable, we rely on the bank secure my money .when i count almost R693 or more is taken off my account. I want all that money to be reversed bank into my account.