Absa is running a ****

My 64 year old month was ****** by absa last week after payday, 25th October 2018. immediately when she saw that there was a debit order that went through, she went to the ABSA Welkom main branch to reverse the transaction. she was told she could not reverse because she has bought something of that value from take-a-lot. she explained that she does not even know what take-a-lot is, let alone use the internet to buy online. on saturday, she got a call from the person who introduced herself as an Absa forensic and told her that there is nothing they could do and that she should just let it go because the money is gone and will not be returned. on monday, the 29th October, she went back again and she was directed to the branch manager who told her that there is nothing they could do because the transaction is under NAEDO collections and they cannot reverse it. my question is why take the money to the bank for safety keeping when they cannot protect yo from un-authorised collections? what does the consumer rights say in such instances? please help my mom.