How does the next paragraph end?

How to deactivate a net10 phone
Consume all your remaining airtime balance.
It would be best to make the most out of the service while you can, so use any airtime you still have on your net10 phone. Make calls or send out text messages until your balance reaches zero.
Do not top-up your net10 number. Your account will automatically deactivate if it doesn't have any airtime left at the end of the current month.