Double debiting customers for the same loan account

I was double debited for the second time in 6 months with no explanation or even accountability.

First debit order discrepancy was taken off two different accounts on unauthorised dates and this time they double debited the same account.

What mismanagement of customer accounts and funds. Why does this bank's systems not reflect Naedo payments received because this is by debit order on its customers accounts? They debit recklessly and evidently do no recons and rectification of such cases.

I'm beyond disappointed, irate is the term at this point.