About My Lg Straighttalk Phone

Just a thought, because I made the same mistake.  Your bill is due on a different day each month.  Your refill is for 30 days or 45 days depending on your choice.  So, on a 30 day card paid on the 30 one month, may be due the 29th the next month due to some months having 31 days.  Another suggestion is to go to StraighTalk.com and check your billing date.  You can sign-up on this site and check your usage whenever you need too.  You can check talk, text and kbs used.  If you've checked and your date is tomorrow, then call Customer service.  All the information is available at the above listed site.