Unauthorized Debited orders

I am not happy with FNB service anymore every my account get debited by companies I don’t know and they debit amounts that are not noticeable. When you query this they will tell that they are just third party... then who supplies my information if I did not??

The month of July I was debited with an amount of R89 and now its a different company they debited R118 those two amounts are not the first, I keep on reversing and this will reflect bad on credit record. This does not happen with other bank accounts that I have only with FNB.