No idea how it works where you are but in Belgium and in the EU we have en.wikipedia.org/wiki/Ombudsman and I can tell you when companies receive an email from them, they don’t mess around. I’ve been waiting for a bike part for a year. I contacted the ombudsman, no cost, just 2 emails, suddenly my carbon belt was shipping the very next day.

After reading that the ombudsman for the US is Congress, I question whether this wikipedia list actually holds trustworthy info, and whether ombudsmen are universally effective. Congress do not strike me as effective resolvers of anything.