As mentioned previously. The only people that can investigate your issue band fix it is the moderators. They can be contacted by opening up a tick via SIMon the chat bot!
Hi l have 50$ plane public mobile always charge me 46$ plus gst as i have 2$ for autopsy and other 2$ for friends but this month the charge 50$ plus gst
Several people had similar problems in the last 1-2 days. Do you have any available balance of $4 in your account presently? If so, you can use for next month payment.
If no available funds, then you will need to contact moderator as desribed abve.