I Don't know. You tell me, This is what they sent me:
Thank you very much for contacting United Customer Care. I apologize
for the delay in responding to your e-mail.
Since Customer Care primarily handles past date issues, please visit our
website united.com then follow these steps:
Home > About United > Company information > Supplier information
From this page towards the end of the paragraph you will see a Supplier
Contact Form. Please fill this out and someone will be in touch.
http://www.united.com/page/article/0,6867,50127,00.html
I hope this information is helpful. Thank you for selecting United.