How secure is your money with FNB

I have in the past year been getting random debit orders on my bank account under R100. when I go through my bank statement there will be some company I do not recognise debiting my account for amounts lower than R100, recent one is R99.99, I would then call the number on the transaction details and they will then refer me to another company, this time I was referred to J&A Solution tel: ***, *** who said that they are running debits on behalf of telemarketing companies (I never buy from telemarketers) they would then promise to return my debits.<br> <br> My problem is, why is FNB letting unauthorised debits through? That is the question I never got an answer from FNB and all they do is to reverse the debits after I send them the request to do so. What if I do not see this at some point with so may transactions I have going through my bank account. I am sick and tired of save guarding my funds which I entrusted to FNB.