Which goes to show the root cause of the delays. Complaints have risen exponentially as a product of the systems merger.

I sent an (admittedly lengthy) message to United Refunds regarding a Premium Seat fee on March 15, and have yet to hear back. Given that my particular issue was fairly specific, and that anecdotal evidence suggests month-long response times, I'm ignoring United's suggestion to contact them again if I haven't heard back within two weeks.