Standard bank Debit orders deducting incorrectly.

I have a loan with Standardbank since March 2018. The debit order went off every month untill June2018 it did not go off. In July the debit order went off twice. When I phoned Standard bank I was informed that: 1.NO BANK DETAILS WERE CONNECTED TO DEBIT ORDER THATS THE REASON THE DEBIT ORDER NEVER WENT OFF 2. SOMEONE AS ALREDY SPOKEN TO ME ON THE DAY THAT THE DEBIT ORDER WENT OFF TWICE WHERE I GAVE PERMISSION THAT THE ACCOUNT CAN BE DEBITED TWICE TO GET MY PAYMENT UP TO DATE - NO ONE HAS PHONED ME THAT DAY AND I DID NOT GIVE ANY ONE PERMISSION TO DEBIT MY ACCOUNT TWICE. I was also informed this will only happen ounce to get my payment up to date. On August the 1st my account was debbited twice AGAIN! I went into the branch and they informed me my money will be payed into account within 24h, wich they did but I kept receiving sms'es saying my payment is not up to date. I went into the branch again for the second time that week they phoned Standardbank where they was informed that a "stop order" needs to be sceduled that this wont happen again. On Friday, August 24 the debit order went off 4 times!!!!! I went to the branch that same day. Again I was informed that I will receive payment within 24h wich I have not received. They also phoned Standardbank again where they were informed that the "stop order" needs to be stopped otherwise it will also deduct from my account. On Wednesday August 29, I only received 2x payments and not 3 payments (one payment/the 4th payment is for the monthly payment). I did communicate with the branch via email stating 1x payment is still outstanding. No feedback has been given since Wednesday. Also i have been charged/penilised extra interest on "my outstanding payment" for creating a stop order and cancelling stop order etc. And no one knows/can explain why there was no bank details connected to account / why or who deducts account twice/4times.

Can you please assist on this matter.