Originally Posted by
Benny8444
I would try to call around 11 PM to Midnight EST and get the HNL call center, they are more helpful and should be able to go out of their way and help you.
UA does have the ability to open up an NC on their flights you just need to be firm and let them know what happened and that you paid C miles and want C class.
Sounds like you're running into various brick walls, but FWIW Benny's advice sounds good to me.
And keep calling every day to find out if C or F inventory has opened up on alternative routes. I vaguely recall that inventory is updated after midnight Central time, but maybe someone else has a clearer sense of this.
Again, hope this all works out.