NBN12 to NBN50

[zhaonanlu]

I am trying to upgrade my NBN plan from NBN12 to NBN50. Every time I try, it fails with the message:

Unfortunately there was an unexpected error when submitting your registration.
We apologise for the inconvenience caused.
Please contact TPG Customer Service on 13 14 23 for further assistance.
When contacting TPG, please quote this error code: < E:adsl_comm:thread_exists >

[Riezl]

Hi @zhaonanlu ,please send us a private message with your TPG customer ID, username and complete address so we can pull up the account and help with your concern.

To send a PM, please refer to this link: How do I private message (PM) in the community