How's this for escalating:

Me (to Customer Care):

"Dear XXXXX,

I have already spoken to web support, and they cannot help. I called
them today again and indeed they offer no solution to this problem.
They say that the website is being upgraded, but they have no
information about when this upgrading will be complete. All they can
offer is to buy the ticket for me over the phone.

If there is no information available about when this problem is going
to be fixed, then I am going to have to find another airline. I am
now looking into status match on American.

Sincerely,

TravelTons"

Customer Care to me:

"Dear TravelTons

Thank you for your reply. I thoroughly understand your point of view
and again wish to express our true regret in failing to meet your valid
expectations.

I hope we can welcome you on board a future United Airlines flight.

Regards,

XXXXX XXXXX
Customer Care Manager"

Probably escalated too much, eh?