PAY ME BACK MY BANK FEES

I have been mailing these people for months - They keep on taking money of my account before date of debit order and I must pay the bank fees - The past year Ive paid ofer R1000-00 bank fees for paying debit order before money is in the account. I never have money in my account on the 24th. THe 25th means the 25th not because it falls on a weekend you take two or 3 days before this is not the agreement. Again this month R200-00 bank fees???????? thinking off changing provider