Debit order a week before payday

I have had no issues before. Today on the 24th Miway decided to take their debit order. Taking my last money from my account even though my agreement says last day of the month. I went to sleep knowing my car is empty but that I have enough to fill the tank to last me until payday. Then I woke up with the debit order notice. I had to call around to borrow petrol money at 6 am in order to be able to get to work because Miway left me with R90 in my account. I have never missed a payment. I get paid on the 29th and Miway agreed to the terms to take it after the 29th. This is unacceptable. I am literally going to be late for work due to this and Miway needs to understand that my job pays the premium. If I cannot get to work because of Miway not understanding how dates work I cannot be a client of them.