Hi there
Welcome to the community,
My apologies but it is a little difficult for me to determine exactly what we can help with, please help me by supplying us with a more specific or discriptive query.
I have supplied a link below with the hope it may aide you with mobile phone top up options and instructions if that is related to your post.
https://community.tpg.com.au/t5/Accounts-and-Billing/How-to-add-Mobile-Prepaid-Balance/m-p/16936
If you are still having difficulties or any concerns please send me a PM (private message) with your CID (customer identication number) or your mobile phone number so can look at this service for you 
Kind regards
Ken