Welcome to the community!
Thanks for raising this to us. We did an article that you may find helpful, this will guide you on how to update the payment details on the account, see the link below.
Let us know how it will go.
I got a message from tpg,their attempt to debit from my account was unsuccessful. Last week i cancelled my ATM card, iam waiting to get new card. May be this week get it. What I do? How can i update my account details? Please let me know. Thanks