Account please ramp up your service!

Hi cartrack, I am behind on my installment due to change in banking details (and your slowness to amend those) But the above is not important, I got a call from someone in accounts, I am bad with names, he says it is impossible for cartrack to deduct the overdue amount with my next debit order because it is over 90 days old and the system will not allow it. A second call came 2 min after that one and the lady said she can set it up from the 1st (new month) which makes sense and I will get a call then. Which is which? I want convenience please cartrack, there is nothing I hate than to make manual payments when there is something called a debit order on my account.