I have utilised all the minutes included in my monthly package and now need to top up pre-paid balance; however, the system would not let me do that as my monthly (auto-debit) payment is still processing. This means I cannot make any calls. What's the solution to this?    Also, I can only see the option of pre-paid top up once I log into my account using a mobile browser; where to see this option while I log into my account using a computer?   Further, I never received a call back from TPG customer support even booking in a call back twice today. Can anyone advise why is that? ... View more