This also happened to me when I had an itinerary re-ticketed at the beginning of August due to a schedule change. I've spoken to three agents, left multiple e-mails with 1KVoice, been through the online refund request process, and the charges ($116 X 2 tickets) have yet to be refunded.

I plan to wait a total of 14 days from when I first raised this issue for the refund request to be reflected on my credit card statement, and then file the online DOT complaint form.

I guess I've been lucky over the past few years, as the agent I spoke with at the refund desk is the first truly hostile "customer service" experience I've had with United since the merger. So it goes...