Welcome to TPG Community and thank you for bringing this matter to our attention. We'll chase this up with our NBN special team that handles such matter and we'll ensure that this will be resolved at the soonest time.
Our sincerest apologies for the inconvenience and let us know if you need anything else.
Thanks for getting back.
We've checked the account and it shows that the refund has been credited to your Credit card account.
It was successfully refunded on 12 March 2021.
Let us know if you need further assistance.