Double deductions on accounts more than once

I have 2 loans with African bank, I'm almost finished. I had challenges and they called we made arrangements and they said they were recording. We agreed that the installment can be deducted 25 September as they called all most end August. So my account was credited, then they debited before even the 1st of September and the agreement was 25 September. I kept quiet only for them to debit twice on the same account and once on the other. I complained at the PTA Madiba branch, was told that afternoon it will be deposited as I mentioned that I was broke. They played me, only paid at their time. Now today I'm double deducted again on the same account but last time they told me it was fixed. I am so disappointed🚮🚮