Nedbank MFC just another reminder we're just numbers

So they just decide to move my MFC car finance debit order from the 25th (a Tuesday) to the 20th (a Friday) making my account overdrawn and leaving me fundless for 5 days until payday THE 25TH. How dare they? Are bank's that desperate to make even more interest off your debt's that they have to do that? I am busy paying for my son's hospital treatments for the last 3 months and my own possible cancer treatments. You arrogant, in-human, greedy, pathetic, self-serving, lecherous, faceless, *********** sub-humans