Welcome to the community!
I assume you are both referring to TPG Singapore Mobile SIM card. You have reached the consumer support for TPG AU. Please be advised that TPG AU & TPG SG are 2 separate entities. Kindly send an email to Singapore Mobile Team at firstname.lastname@example.org or visit their Facebook Page at https://www.facebook.com/TPG-Singapore-785533401811953/ for assistance with your concern.