Cartrack Account Department poor service

Cartrack accounts department has debited my account on the last day of the month for years. I recently (In may ) added a vehicle. They then changed the debit order date to before the last day. They have a debit order mandate for the last day of the month. They run a debit order earlier and then charge R59 for late debit. In July, I was debited with This R59 over and over again. I had to explain to them that they should debit on the last day. Today is 28th Sept. Cartrack says that I am in arrears.. I cannot believe this. I insincerely hope that someone in Cartrack will rectify this situation. I'm struggling for 3 months running. There are a few R59's owed. Their accounts department will not even acknowledge that.