Hi,   I tried to activate my sim, but I cannot authorise the transfer of my mobile number since my old number no longer have the credit to reply the sms.   I tried to call 1300993019 number, but again, my phone do not have any credit, so I am unable to call TPG.   Wondering can I receive a call back or any other way outside topping up a sim that I will be abendoning after activiting the tpg sim? ... View more