Hey there, DavidScotty! Thanks for reaching out to us. As this requires us to refer to your account details, please direct your query over to Facebook messenger (http://m.me/starhub) or Twitter Direct Message (https://twitter.com/StarHubCares) so that we can log a case for you and respond to you there. --Addie
Hi @aikon_c, your main balance might have been deducted because Pay-Per-Use data charges kicked-in. I suggest that you contact our Customer Care Support through Facebook or Twitter to further assist you with your concern as this requires us to check your account to see the reason for the balance deduction.