Both my mobile and my wife's mobile were successfully billed $19.99 around the 12th last month, as happens every month. However today when we try to make calls to we both get a message saying our account balance is insufficient to make this call.
Yet not only were we successfully billed last month, but these calls are meant to be $0 (unlimited calls to oz numbers).
Our next billing date is still a few days away.
My Account shows current prepaid balance as $0 and amount payable as $0. (edit: in my original post I thought it also showed 0gb data used, but actually it's 0.02gb, which would be right.)
What might the problem be?
