Debit order incorrect and No feedback from Nedbank

There was a debit order that went of twice on my account. There was enough funds in for one debit order to go through. The company paid the incorrect debit order the next day. Nedbank still debited my account for the R90-00 unpaid item fee the day after? after the company has corrected their mistake. I want this corrected. I also did send a secure message online which is just being ignored, the same with my previous requests that now the status says resolved after i received no feedback.