IIRC Spectrum has the biggest piece of this pie, and they use an in-house eligibility verification system. There's probably a relationship between those two facts.

Unlike you, I didn't report my issues at the time, but since this whole thing has blown up in the news (and unfortunately become politicized) I have submitted letters detailing my experience. Hopefully they'll get to the bottom of things and find a way to throw out the bathwater without the baby.