Top up 3 dollars and acct should be balance of zero. check see if overage of data has caused negative balance. I usually use Credit card to pre-pay month prior to due date on auto pay. hope this helps.
Every person has different needs while traveling. Length of stay, location of repeaters example dead zones etc. This seems to be a good add on. Unlimited U.S. Talk, Text and 250MB Data Bundle = $20
