Early Debit order run

MY SALARY DATE IS THE 26TH. IF ITS A PUBLIC HOLIDAYBOR WEEKEND THEN I GET PAID THE NEXT WORKING DAY. WRAGGIEWAAR SAH RUNS THEIR DEBIT ORDER ON THE 24TH COSTING ME R150 PER BOUNCED DEBIT ORDER BECAUSE THERE IS A HOMELOAN AND THE ADDITIONAL LOAN FOR MY TRANSFER COSTS. WHEN I EMAILED THEM ABOUT IT THEY BASICALLY SAID TOO BAD THATS THE CONTRACT I SIGNED THAT THEY DEDUCT THE WEEKDAY BEFORE THE 26TH THEN. NOU ***KEN WAT MOET EK MAAK.