I'm Trying to upgrade my NBN to NBN50 and get the following 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 >   I've tried the chat support for a week but been unable to get through to the NBN plan change team. Is there any way I can just log a ticket to get this resolved. ... View more