giving out banking details

my account had three debit order of 99.99 rand on it i try to get answers from standard bank and guess what i had to pay for finding out who is *****ing money from my account they the bank told me that i must must have giving out my detail to any one but i know that i did not i there think that the bank is selling the banking details to people to commit ***** as i have never given out my banking detail to any one but the bank insist that they don't give out any details but they charge you for trying to find out who is *****ing from your account SO I CAN ONLY COME TO THE CONCLUSION THAT STANDARD BANK IS SELLING THE CUSTOMER BANKING DETAILS BECAUSE THEY REFUSE TO INVESTIGATE WHERE THE BANKING DETAIL ARE COMING FROM OR HOW THESE ********** ARE GETTING THEIR CUSTOMER BANKING DETAILS UNLESS THEY WORKING TOGETHER WITH THE ********** SO HERE IT IS THAT STANDARD BANK IS HELPING THE ******* AS THEY THE BANK REFUSE TO INVESTIGATE SO PEOPLE PLEASE DON'T TRUST STANDARD BANK THEY ARE GIVING OUT YOUR BANKING DETAILS