Hi @nkhodadadi,
TPG offers two payment methods: Credit Card and Direct Debit (bank account). From time to time, you may need to update your payment details, for example if you have a new credit card or if you change your bank account.
We have created articles that you can refer to in updating your payment infiormation online:
Should you require further assistance, you may reach out to us again or you may check out our self-help options located here: http://tpg.com.au/support
To help manage your TPG services on the go, you may download our TPG Mobile App on this link: tpg.com.au/services/tpg-app
Regards,
Ahra_G
