I mean, litigation is fine and all, but what you can do will vary by jurisdiction.
In the past 14 months I've had to deal with two misbehaving insurance companies, one misbehaving utility provider (overcharging), and a few other things as well that I don't really want to talk about here.
I did not get to the point of actually having to take legal action but I did have to threaten it in two cases, along with action from the relevant ombudsmen.
Nothing like this, or on this scale, has ever happened to me before (once, about thirty years ago, I had to threaten a company with small claims for unpaid wages, but that's it).
There are, to an extent, processes you have to follow before you can get to the point where you are within your rights to threaten to throw the legal book at companies. You usually have to have gone through their complaints procedures and got to what you consider an unsatisfactory result. This in itself can take weeks or months of emailing back and forth, phone calls, etc. You gradually escalate your approach, you cover the internet in bad reviews, you contact your local MP and the local media, and so it goes on.
Its an exhausting and kafkaesque shitshow and this is with the backing of authorities, such as ombudsmen, who operate with the backing of legislation.
I understand why you have to do it: because some consumers are vexatious and dishonest. But it takes too long (elapsed) and it takes far too much time (effort) that could be better spent with family and friends (as an example).
I am currently gearing myself up to deal with the other insurance company, who I haven't so far had to threaten with legal action, and file a police complaint due to some new information that's come to light that shows our insurers, and the advice they gave us, in a very bad light.
Honestly, I don't know if I can be bothered any more. Taking the actions that I have, well, I wouldn't say they've left us better off, but they've left us much less worse off, because we haven't been taken for mugs... but the cost to my sanity and my soul. I don't know if the juice has always been worth the squeeze.
And that, of course, is what these companies bank on: that you'll get tired of it all and stop bothering them. It's extremely scummy behaviour, and frustrates me that I have to get to the point of threatening them with legal action just to get them to do the right thing. I strongly resent being forced to act like an asshole just to get a fair outcome.
I welcome any legislation that helps consumers get to a fair outcome more easily, but I also suggest that we need to look at the question of the obfuscatory tactics companies use to force consumers to jump through ridiculous hoops first.