I purchased and activated a $30 recharge for my prepaid daily plus plan on 19/1/18. It is now 22/1/18 and I am recieving notifications saying I am out of credit. Does anyone know what's going on there?
4 days isn't enough to use $30 credit on this plan as it uses a maximum of $4 a day.
You have to register for a my account and link your service into it, so you can see the spendage. We can't guess.
But it is weird tgat your phone is using all the data. Look in the data usage section of the phone.