A solution for me is to avoid dealing with shitty companies like this and seek online-only alternatives (with a good web UI), and failing that, if a shit company screws up and I can’t fix it quickly through their awful customer support I stop paying and let them call me.

It’s funny how they never keep their promises of calling you back until you actually stop giving them money. They also magically start paying more attention to what you say, and complaint letters that went unanswered for months and presumed “lost” suddenly become found and answered.