With Aldi In addition to the prepaid plan you must have a PAYG component added on. Note their phone plans now include everything including MMS.
So, I always wondered how my PAYG component keeps running down. Well now I have an explanation from them.
On your recharge day you are not covered for anything from the end of your last month plan (at a particular time) until Aldi processes your next recharge. Who would have thought that this was even possible. So if you do not have an amount in your PAYG balance you will not be able to use your phone at all.
You should not have to be monitoring your account for the exact period that your account recharges in order for you to be not charged additionally to your plan. Otherwise what is the purpose of an automatic recharge process.
In Aldi’s exact words
"Auto-recharge is active on your service, We initiate the auto-recharge process at 23:59 AEST but due to time difference yours may start as early as 20:59
Auto-recharge is not an instant recharge process and when we start to process your recharge your plan will be removed until your payment has been approved from your bank/credit card or PayPal, in most cases this can be a lot faster but we cannot always guarantee the time frame, there may be some instances that we have a IT system issue which could delay the process longer, if this is to happen there are other methods you could use to recharge your service online or via the mobile app
This will cancels out the auto-recharge but if you are charged for a second payment we will refund this for you straight away
During the time that you do not have an active plan your PAYG credit will be used, if you do not have PAYG then you will not be able to use the service until your auto-recharge completes, however we do recommend that you apply credits to stop any future disruption to your service ."