So, let's look at options:
a) Go to social media and risk the wrath of the Internet as a whole
b) Go to DOT and have "top people" look into this
c) Continue to see what options there are to work with UA
d) Take chances by telling us the story and seeing if FT people can help figure out it this is a reasonable issue to elevate or not

While I might be a newbie here compared to some of you (only 1k for years and recently 1MM since joining MP 35 years ago), I have had my share of IRROPS, lost luggage, trips that went sideways, sleeping in airports, etc - but I dont recall ever being in a situation in which someone at least tried to help - even if it was something that I brought upon myself (like hanging out in the lounge too long and missing my flight from Cancun). I think UA is interested in providing good service and wants feedback - but there are practical limits and a policy of "the customer is always right" is not exactly one that works anywhere anymore.