Several years ago BBB’s website became Tor-hostile. This forced privacy-minded people to rely on analog methods for complaint submissions.
Fax was our refuge, until just recently. BBB agencies have been dropping their fax numbers. So we are increasingly forced to resort to snail mail, which is slow and increasingly costly particularly for anyone abroad.
What’s left? I won’t touch Yelp. Fuck those incompetent anti-tor motherfuckers. Yelp cannot be taken seriously with the massive sewer of false reports they publish without regard to credibility.

BBB is a scam, they extort companies to pay them to remove stuff basically. Not very helpful for consumer reference if companies can pay for a good profile.
It is true about the extortion-based mud-cleanup shady way of operating. But from a consumer standpoint they still get results often enough. I’ve experienced it 1st hand w/many complaints I’ve filed with different BBB agencies. I’ve experienced roughly an even distribution of these outcomes:
Perhaps you have a quite high bar with high expectations. For me, if BBB forces a silent merchant to talk, that’s already sufficient progress to justify the complaint. Communication is half the battle.