Just a bit of a grumble...
My wife has an auto renewing $19 pack which has been great value. Shes just got into geocaching and is starting to use more data on her phone.
What I was recently surprised about is that after her included 50mb was gone she was switched over to the casual data rate of 50c per mb and managed to chew through a $20 top up in a day or two.
After checking her phone (once I was asked why she had no data left and had no credit left) I see there was a message saying her 50mb was almost exhausted - which is also great.
However, what I didnt see was a message saying she had been swicthed over to a casual rate. Had we known that we wouldve bought a new data pack rather than chew through $20 very quickly.
So lesson learned this time but pretty grumpy to have wasted $20.
Any chance you can add this warning to the text you already send?