[devilincarnate]

Normally when you start a contract it takes a few days for the first bill to be produced, so you will have a pro-rata allowance of mins, texts and data allowance ( so when the first bill is produced you will get the full monthly allowance.
The only thing that i can think of in regards to the mins and texts are has your son made any calls and texts from the handset or it could be that the system is taking a while to update ( as sometimes the calls and texts can take up the 48 hours to update ) hope this helps