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Hi @Irwanshah ,
Welcome to the community!
We'd like to confirm if you have done activating the new SIM. In case you need a reference on how to activate the sim feel free to visit this link. https://community.tpg.com.au/t5/SIM-Only-Plans/How-to-activate-your-TPG-Mobile-SIM-card/td-p/5644
We'd like to confirm if only the outgoing call is having an issue or it also affect the data usage.
We'll wait for your response.
Cheers!
Hi @Irwanshah ,
Thanks for sending us your details. We recommend to activate the SIM card using the given link above. On the other hand, we cannot change the Username or the Customer ID but we can update basic information for the account.
Let us know should you require further assistance.
Cheers!