My last payment made was on June 15, But as of today the self serve site says that my next bill is not due for another 25 days and my current balance is $0.00. I'm just worried that if I don't pay my bill it may affect my credit, and since my monthly bill varies from month-to-month, I don't know exactly how much to pay for the previous month. Also, I don't want my phone to be cut-off. Has this ever happened to anyone before? Cheers, Joe.