Inconvenience caused by the incompetence of the Nedbank

We find ourselves in a situation where nedbank home loans debited my husband’s account twice for the home we took with nedbank, The home loan goes off from his salary on the 27th of each month since we took the loan in 2020 and now on the 27th of July 2023 nedbank debits the bank account as well. We are more R7000 less with ,we have been calling Nedbank since the 28th of July and we were told funds Will reflect to the main account on the 29th that never happened. On the 31st of July 2023 my husband took the day off from work to go the branch only to be given the reference number the money is into the account till today. How are we supposed to survive with this inconvenience of having Nedbank keeping more than R7000 for absolutely no reason. May someone escalate this matter and have it fixed today.