Debit order on the 19/09/2020 for WHAT???

My mother and siblings have a joint bond through ABSA and all has been well with regards to our debit orders for years until now (Feb 2020). The debit order is meant to go off my mothers account on the 5th of every month as initially agreed upon but as of late, ABSA debits on the 2nd/ 3rd/ 4th and then again on 5th and then send a reminder SMS to ensure that she has sufficient funds, yet they got their monies prior to the 5th of that specific month. So you tell me, who must pay for those ****** charges firstly??? ABSA got their bond money on the 4th this month and tried to debit again on the 5th and there was no money as they received the bond money the day before and decided to debit again yesterday 19/09/2020 (of which they received money) for WHAT?? Someone please educate me??? I don't understand why my mothers account must be debited continuously when we agreed on a specific debit order date. We previously visited an ABSA branch and they could not explain it and directed us to the phones to call the call centre, still nothing has changed. I would like someone to call me so that they can riddle me this?? Why do you keep debiting my mothers account continuously?? Who is paying for all these charges?? I want the money taken yesterday back into her account ASAP, you were able to take the monies in one go and I would appreciate the money back in one go. I don't want to hear stories of 48-72 hours then the cash will be back in her account or a number of days. I am totally and utterly disgusted and will definitely not be using your services in the future once the bond is paid up. I would appreciate a call from an individual that will sort this issue out and not send me from pillar to post, this person must have the mandate to sort this out and not beat around the bush!!!!!