Error when changing plan

[jmsfwctt]

Everytime I attempt to upgrade my NBN plan I recieve the following error (this is despite waiting several hours between attempts as suggested in other posts): 

E:adsl_comm:thread_exists

Any help would be appreciated.

[Aubrey]

Hi @jmsfwctt, let's take a look at your account and help you with the plan change. Please send your account details via private message.