Not OP, but I've had much success with making complaints to my state's Attorney General Office. I wrote about my experiences in a LPT [1] recently. Some states' Attorney Generals are more helpful than others, but in Ohio, any resident can make a consumer complaint in a few minutes online, and in my experience, businesses big and small suddenly take your greivances very seriously once the AG's office is put in the loop.
Does anyone know if there's anything similar for the UK? As far as I know there's small claims court but that would only work if you can demonstrate monetary loss or damages which would be tough in this case.
[1]-https://www.reddit.com/r/LifeProTips/comments/9ci4qe/lpt_get...