Angry old mutual customer

I have 2 policies with old mutual currently I am out of the country and gave my daughter power of attorney over my affairs in South Africa. In January 2020 I personally went to old mutual parow branch and asked them to change my debit order date from 25th to last day of the month which was done. In May my daughter got a letter saying that my policies are in arrears. My daughter went into old mutual and I'm sorry to say but your staff are not well trained to answer questions they act like they know it all but actually are very useless! My daughter then did her own investigation and pulled a bank statement and saw that old mutual is trying to debit my account from the 22nd of everymonth (why?) when my debit order day is the last day of the month these NEADO track cost me R150 penalty on my account because of a debit order that does not go off.

Now my question is why is old mutual debiting my account from 22nd of each month and last day of the month.? Why has my debit orders not gone off since May? Who is now liable for this! I want old mutual to correct their error and fix this IMMEDIATELY!