I understand you want to deactivate the message advising you of your balance every time you make a call. To obtain information about your Prepaid service, you may contact them by dialing "*611 SEND" from your wireless phone, or (888) 294-6804 from any phone, to speak with a Customer Service Representative.
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All the replies referring to this are way outdated. You CAN do this withouot talking to representitive by;
1. Dial *611 to get voice prompt
2. Hit option 7 (other)
3. Say "Change notification level"
4. When voice asks to change to "Low"; hit 1 for yes.