Charging us for Not doing their JOB!

Few Months back Absa Vehicle finance did not ran a debit order on my account. They told me there are no funds on my account, but when i check i had money in the account.

Today on the 04/10/2017, they have not yet ran a debit order. I do have funds on my account. They going to tell me next month that i did not have funds in my account. And i get charged for them not running a a debit order. THIS IS HOW THEY RIP US OFF?